parking brake MERCEDES-BENZ SPRINTER 2005 Service Repair Manual

INTERNATIONAL SYMBOLS
DESCRIPTION
The graphic symbols illustrated in the following
International Control and Display Symbols Chart
(Fig. 1) are used to identify various instrument con-
trols. The symbols correspond to the controls and dis-
plays that are located on the instrument panel.
FASTENER IDENTIFICATION
DESCRIPTION
The SAE bolt strength grades range from grade 2
to grade 8. The higher the grade number, the greaterthe bolt strength. Identification is determined by the
line marks on the top of each bolt head. The actual
bolt strength grade corresponds to the number of line
marks plus 2. The most commonly used metric bolt
strength classes are 9.8 and 10.9. The metric
strength class identification number is imprinted on
the head of the bolt. The higher the class number,
the greater the bolt strength. Some metric nuts are
imprinted with a single-digit strength class on the
nut face. Refer to the Fastener Identification and
Fastener Strength Charts (Fig. 2) and (Fig. 3).
Fig. 1 INTERNATIONAL CONTROL AND DISPLAY SYMBOLS
1 High Beam 13 Rear Window Washer
2 Fog Lamps 14 Fuel
3 Headlamp, Parking Lamps, Panel Lamps 15 Engine Coolant Temperature
4 Turn Warning 16 Battery Charging Condition
5 Hazard Warning 17 Engine Oil
6 Windshield Washer 18 Seat Belt
7 Windshield Wiper 19 Brake Failure
8 Windshield Wiper and Washer 20 Parking Brake
9 Windscreen Demisting and Defrosting 21 Front Hood
10 Ventilating Fan 22 Rear hood (Decklid)
11 Rear Window Defogger 23 Horn
12 Rear Window Wiper 24 Lighter
2 INTRODUCTIONVA

JUMP STARTING
STANDARD PROCEDURE - JUMP STARTING
WARNING: REVIEW ALL SAFETY PRECAUTIONS
AND WARNINGS IN THE BATTERY SYSTEM SEC-
TION OF THE SERVICE MANUAL. (Refer to 8 -
ELECTRICAL/BATTERY SYSTEM/BATTERY - STAN-
DARD PROCEDURE)
²DO NOT JUMP START A FROZEN BATTERY,
PERSONAL INJURY CAN RESULT.
²IF EQUIPPED, DO NOT JUMP START WHEN
MAINTENANCE FREE BATTERY INDICATOR DOT IS
YELLOW OR BRIGHT COLOR.
²DO NOT JUMP START A VEHICLE WHEN THE
BATTERY FLUID IS BELOW THE TOP OF LEAD
PLATES.
²DO NOT ALLOW JUMPER CABLE CLAMPS TO
TOUCH EACH OTHER WHEN CONNECTED TO A
BOOSTER SOURCE.
²DO NOT USE OPEN FLAME NEAR BATTERY.
²REMOVE METALLIC JEWELRY WORN ON
HANDS OR WRISTS TO AVOID INJURY BY ACCI-
DENTAL ARCING OF BATTERY CURRENT.
²WHEN USING A HIGH OUTPUT BOOSTING
DEVICE, DO NOT ALLOW BATTERY VOLTAGE TO
EXCEED 16 VOLTS. REFER TO INSTRUCTIONS
PROVIDED WITH DEVICE BEING USED.
FAILURE TO FOLLOW THESE INSTRUCTIONS MAY
RESULT IN PERSONAL INJURY.
CAUTION: When using another vehicle as a
booster, do not allow vehicles to touch. Electrical
systems can be damaged on either vehicle.
TO JUMP START A DISABLED VEHICLE:
(1) Raise hood on disabled vehicle and visually
inspect engine compartment for:
²Battery cable clamp condition, clean if necessary.
²Frozen battery.
²Yellow or bright color test indicator, if equipped.
²Low battery fluid level.
²Generator drive belt condition and tension.
²Fuel fumes or leakage, correct if necessary.
CAUTION: If the cause of starting problem on dis-
abled vehicle is severe, damage to booster vehicle
charging system can result.
(2) When using another vehicle as a booster
source, park the booster vehicle within cable reach.
Turn off all accessories, set the parking brake, place
the automatic transmission in PARK or the manual
transmission in NEUTRAL and turn the ignition
OFF.(3) On disabled vehicle, place gear selector in park
or neutral and set park brake. Turn off all accesso-
ries.
(4) Connect jumper cables to booster battery. RED
clamp to positive terminal (+). BLACK clamp to neg-
ative terminal (-). DO NOT allow clamps at opposite
end of cables to touch, electrical arc will result.
Review all warnings in this procedure.
(5) On disabled vehicle, connect RED jumper cable
clamp to positive (+) terminal. Connect BLACK
jumper cable clamp to engine ground as close to the
ground cable attaching point as possible.
(6) Start the engine in the vehicle which has the
booster battery, let the engine idle a few minutes,
then start the engine in the vehicle with the dis-
charged battery.
CAUTION: Do not crank starter motor on disabled
vehicle for more than 15 seconds, starter will over-
heat and could fail.
(7) Allow battery in disabled vehicle to charge to
at least 12.4 volts (75% charge) before attempting to
start engine. If engine does not start within 15 sec-
onds, stop cranking engine and allow starter to cool
(15 min.), before cranking again.
DISCONNECT CABLE CLAMPS AS FOLLOWS:
²Disconnect BLACK cable clamp from engine
ground on disabled vehicle.
²When using a Booster vehicle, disconnect
BLACK cable clamp from battery negative terminal.
Disconnect RED cable clamp from battery positive
terminal.
²Disconnect RED cable clamp from battery posi-
tive terminal on disabled vehicle.
TOWING
STANDARD PROCEDURE - TOWING
WARNING: Do not tow the vehicle if the key cannot
be turned in the ignition lock. If the key cannot be
turned, the ignition lock remains locked and the
vehicle cannot be steered. With the engine not run-
ning there is no power assistance for the braking
and steering systems. In this case, it is important to
keep in mind that a considerably higher degree of
effort is necessary to brake and steer the vehicle.
The vehicle must not be towed with the front axle
raised and the key in position 2 in the ignition lock
as the drive wheels could then lock due to the
acceleration skid control (ASR)
0 - 6 LUBRICATION & MAINTENANCEVA

heard during a coast, the front pinion bearing is the
source.
Differential bearings usually produce a low pitch
noise. Differential bearing noise is similar to pinion
bearing noise. The pitch of differential bearing noise
is also constant and varies only with vehicle speed.
Axle shaft bearingsproduce noise and vibration
when worn or damaged. The noise generally changes
when the bearings are loaded. Road test the vehicle.
Turn the vehicle sharply to the left and to the right.
This will load the bearings and change the noise
level. Where axle bearing damage is slight, the noise
is usually not noticeable at speeds above 30 mph.
LOW SPEED KNOCK
Low speed knock is generally caused by a worn
U-joint or by worn side-gear thrust washers. A worn
pinion shaft bore will also cause low speed knock.
VIBRATION
Vibration at the rear of the vehicle is usually
caused by a:
²Damaged drive shaft.
²Missing drive shaft balance weight(s).
²Worn or out-of-balance wheels.
²Loose wheel lug nuts.
²Worn U-joint(s).
²Loose/broken springs.
²Damaged axle shaft bearing(s).
²Loose pinion gear nut.
²Excessive pinion yoke run out.
²Bent axle shaft(s).
Check for loose or damaged front-end components
or engine/transmission mounts. These components
can contribute to what appears to be a rearend vibra-
tion. Do not overlook engine accessories, brackets
and drive belts.
NOTE: All driveline components should be exam-
ined before starting any repair.
DRIVELINE SNAP
A snap or clunk noise when the vehicle is shifted
into gear (or the clutch engaged), can be caused by:
²High engine idle speed.
²Transmission shift operation.
²Loose engine/transmission/transfer case mounts.
²Worn U-joints.
²Loose spring mounts.
²Loose pinion gear nut and yoke.
²Excessive ring gear backlash.
²Excessive side gear to case clearance.
The source of a snap or a clunk noise can be deter-
mined with the assistance of a helper. Raise the vehi-
cle on a hoist with the wheels free to rotate. Instruct
the helper to shift the transmission into gear. Listenfor the noise, a mechanics stethoscope is helpful in
isolating the source of a noise.
STANDARD PROCEDURE - DRAIN AND FILL
NOTE: Drain oil when warm.
(1) Clean area around oil fill plug and drain plug.
(2) Remove oil drain plug and drain oil (Fig. 1).
(3) Install oil drain plug and tighten to N´m 100
(74 ft. lbs.).
(4) Remove oil fill plug and fill housing up to bot-
tom edge of oil fill hole (Fig. 1).
(5) Install oil fill plug and tighten to N´m 100 (74
ft. lbs.).
REMOVAL
(1) Raise and support the vehicle.
(2) Position a suitable lifting device under the axle
and secure axle to device.
(3) Remove wheels and tires.
(4) Unplug wear indicator cable (Fig. 2) and (Fig.
3).
(5) Detach cable connector for brake pad wear
indicator.
(6) Remove ABS sensor and clamp bushing from
mounting bore.
NOTE: The right-hand ABS sensor cable is labeled
at the factory with a white tag.
(7) Remove cable ties from the park brake cables.
Release connection cable of brake pad wear indicator
and ABS sensor cable up to the relay unit of the
parking brake.
(8) Remove brake cables from adjuster.
(9) Remove brake calipers with adapters and lines.
Fig. 1 FILL PLUG
1 - FILL PLUG
2 - DRAIN PLUG
VAREAR AXLE 3 - 11
REAR AXLE (Continued)

(10) Install connection cable of brake pad wear
indicator and ABS sensor cable up to the relay unit
of the parking brake.
(11) Install cable ties to the park brake cables.
(12) Install ABS sensor and clamp bushing to
mounting bore.
NOTE: The right-hand ABS sensor cable is labeled
at the factory with a white tag.
(13) Attach connector cable for brake pad wear
indicator.
(14) Plug in cable of brake pad wear indicator.(15) Install the wheels and tires.
(16) Fill axle with appropriate lubricant.
(17) Remove lifting device from under the axle.
(18) Remove support and lower vehicle.
SPECIFICATIONS
AXLE SPECIFICATIONS
DESCRIPTION SPECIFICATION
Axle Ratio 3.73, 4.11
Ring Gear Diameter 216 mm (8.5 in.)
Fig. 3 DUAL REAR WHEEL AXLE
1 - SPRING 11 - WEAR INDICATOR CONNECTOR
2 - SPRING SHACKLE 12 - BRAKE HOSE
3 - PLATE 13 - LUG NUT
4 - COLLAR NUT 14 - NUT
5 - BRAKE CABLE 15 - WASHER
6 - REAR AXLE 16 - BOLT
7 - ALB LEVER 17 - SHOCK ABSORBER
8 - NUT 18 - PROPELLER SHAFT
9 - BOLT 19 - BOLT
10 - WEAR INDICATOR CABLE 20 - ABS SENSOR
21 - SENSOR BUSHING
VAREAR AXLE 3 - 13
REAR AXLE (Continued)

AXLE SHAFTS
REMOVAL
(1) Remove wheels.
(2) Detach front brake cable.
(3) Pull ABS sensor together with clamp bushing
out of bearing cap (Fig. 4).
(4) Remove brake disk at rear axle. Attach brake
caliper with lines connected in wheel house.
(5) Remove brake shoes of parking brake.
(6) Remove brake control cable lock.
(7) Remove bearing cap bolts and pull axle shaft
out of axle tube (Fig. 4).
(8) Remove seal/gasket.
INSTALLATION
(1) Install sealing ring.
(2) Install rear axle shaft in the axle tube (Fig. 5).
(3) Installnewbearing cap bolts and tighten to 72
N´m (53 ft. lbs.) (Fig. 6).
NOTE: Tighten bolts diagonally across.
(4) Install brake control cable lock.
(5) Install parking brake shoes.
(6) Install brake disk and calipers.
(7) Coat clamping bush with acid-free grease.
Insert ABS sensor with clamping bush fully into the
mounting hole.
(8) Install front brake cable.
(9) Operate brake pedal several times until brake
pads contact brake discs (brake pressure built up).
(10) Install wheels.
WRENCH 9279
FLANGE PULLER 8992
WRENCH 9290
INSTALLER 9291
WRENCH C-3281
VAREAR AXLE 3 - 15
REAR AXLE (Continued)

(2) Slide axle shaft into axle tube.
(3) Install axle shaft hub nuts and tighten to N´m
65 (48 ft. lbs.).
(4) Install wheels.
AXLE HUB BEARINGS/SEALS
REMOVAL
(1) Remove brake caliper with support.
(2) Remove axle shaft.
(3) Back-off parking brakes.
(4) Remove outer hub nut with Wrench 9290 (Fig.
19).
(5) Remove locking plate, inner hub nut and thrust
washer (Fig. 19).
(6) Pull hub off axle tube.
(7) Pry out ABS sensor and remove seal from hub
(Fig. 20).
(8) Remove hub bearings from hub (Fig. 21).
(9) Remove inner and outer bearing cups from hub
with a hammer and drift.
INSTALLATION
(1) Install hub bearing cups with Installer 9291
and a hammer.
(2) Clean and thoroughly grease bearings with
Multi-purpose grease.
(3) Install inner wheel bearing.
(4) Coat outer circumference ofnewseal with
Hylomar SQ 32 M sealant.CAUTION: Do not coat seals rubberized sealing sur-
faces with sealant.
(5) Install seal into hub with an appropriate
installer.
NOTE: Sealing ring should be flush with wheel hub
or max. 3mm (0.12 in.) deep.
(6) Coat contact surface of ABS sensor ring with
Hylomar SQ 32 M sealant.
Fig. 19 HUB NUTS
1 - NUTS
2 - LOCKING PLATE
3 - THRUST WASHER
Fig. 20 SENSOR RING & OIL SEAL
1 - ABS SENSOR RING
2 - SEAL
Fig. 21 AXLE HUB BEARINGS
1 - REAR BEARING
2 - HUB
3 - FRONT BEARING
4 - ROTOR
3 - 20 REAR AXLEVA
AXLE SHAFTS - DUAL REAR WHEELS (Continued)

(7) Drive ABS sensor ring ring in as far as the
stop with a plastic hammer.
(8) Install hub on axle tube.
(9) Install outer hub bearing (Fig. 22).
(10) Install thrust washer (Fig. 23).
(11) Install inner hub nut (Fig. 24).
(12) Tighten inner hub nut with Wrench 9290 to
300 N´m (221 ft. lbs.) while spinning the wheel hub
constantly. Turn back inner nut and then tighten
until it touches the thrust washer without play. Then
tighten 1/8 turn.
(13) Install locking plate (Fig. 25).(14) Install outer hub nut and tighten with
Wrench 9290 to 250 N´m (184 ft. lbs.).
(15) Install axle shaft.
(16) Install brake caliper and support.
(17) Adjust parking brakes.
Fig. 22 OUTER HUB BEARING
1 - HUB
2 - BEARING
Fig. 23 THRUST WASHER
1 - HUB
2 - WASHER
Fig. 24 INNER HUB NUT
1 - HUB
2 - NUT
Fig. 25 LOCKING PLATE
1 - HUB
2 - PLATE
VAREAR AXLE 3 - 21
AXLE HUB BEARINGS/SEALS (Continued)

(9) Unscrew the marked nut.
(10) Reattach retainer wrench to joint flange.
(11) Screw onnewcollared nut and tighten care-
fully in stages until the previously value of torque to
rotate is exceeded by 0.5 N´m. (4.4 in. lbs.).
CAUTION: The total friction moment must not be
obtained by slackening the collared nut. Avoid over-
tightening the collared nut otherwise the compres-
sion ring inside will be compressed and will have to
be replaced. This requires total disassembly of the
gear set.
(12) Cut the collar of the tightened collared nut
(Fig. 30).
(13) Bend collar so it touches the wall of the slot
in the pinion shaft (Fig. 31).(14) Connect propeller shaft to pinion flange.
(15) Pour in oil up to bottom edge of oil filler hole
(Fig. 32).
(16) Screw in oil filler plug and tighten to 100 N´m
(74 ft. lbs.).
(17) Install wheels at rear axle.
(18) Operate brake pedal several times until brake
pads contact brake discs (brake pressure built up).
(19) Attach rear brake cables if removed and
adjust parking brake.
Fig. 29 PINION SEAL INSTALLER
1 - AXLE
2 - INSTALLER
Fig. 30 COLLARED NUT
Fig. 31 BEND COLLAR OF NUT
1 - COLLARED NUT
2 - DRIFT
Fig. 32 FILL PLUG
1 - FILL PLUG
2 - DRAIN PLUG
VAREAR AXLE 3 - 23
PINION SEAL (Continued)

STANDARD PROCEDURE - MASTER
CYLINDER BLEEDING..................17
REMOVAL.............................17
INSTALLATION.........................18
PEDAL
REMOVAL.............................18
INSTALLATION.........................19
POWER BRAKE BOOSTER
DESCRIPTION.........................19
OPERATION...........................19
REMOVAL.............................19
INSTALLATION.........................19
ROTORS
REMOVAL
REMOVAL - FRONT (SRW)..............19
REMOVAL - REAR (SRW)...............20
REMOVAL - FRONT (DRW)..............20
REMOVAL - REAR (DRW)...............20
INSTALLATION
INSTALLATION - FRONT (SRW)..........21
INSTALLATION - REAR (SRW)...........21
INSTALLATION - FRONT (DRW)..........21
INSTALLATION - REAR (DRW)...........21
SUPPORT PLATE
REMOVAL - REAR......................22
INSTALLATION - REAR...................22
PARKING BRAKE
SPECIFICATIONS
TORQUE CHART......................22SPECIAL TOOLS
PARK BRAKE........................23
CABLE TENSIONER
REMOVAL.............................23
INSTALLATION.........................23
CABLES
REMOVAL
REMOVAL - FRONT....................24
REMOVAL - REAR.....................24
INSTALLATION
INSTALLATION - FRONT................24
INSTALLATION - REAR.................25
ADJUSTMENTS
ADJUSTMENT - PARKING BRAKE CABLES . 25
LEVER
REMOVAL.............................26
INSTALLATION.........................26
SHOES
REMOVAL
REMOVAL - (SRW)....................26
REMOVAL - (DRW)....................26
CLEANING - REAR DRUM IN HAT BRAKE....27
INSTALLATION
INSTALLATION - (SRW).................27
INSTALLATION - (DRW).................27
ADJUSTMENTS
ADJUSTMENT........................27
BRAKES - BASE
DIAGNOSIS AND TESTING - BASE BRAKE
SYSTEM
Base brake components consist of the brake pads,
calipers, brake drum in hat rotor in the rear, rotors,
brake lines, master cylinder, booster, and parking
brake components.
Brake diagnosis involves determining if the prob-
lem is related to a mechanical, hydraulic, or vacuum
operated component.
The first diagnosis step is the preliminary check.
PRELIMINARY BRAKE CHECK
(1) Check condition of tires and wheels. Damaged
wheels and worn, damaged, or underinflated tires
can cause pull, shudder, vibration, and a condition
similar to grab.
(2) If complaint was based on noise when braking,
check suspension components. Jounce front and rear
of vehicle and listen for noise that might be caused
by loose, worn or damaged suspension or steering
components.(3) Inspect brake fluid level and condition. Note
that the brake reservoir fluid level will decrease in
proportion to normal lining wear.Also note that
brake fluid tends to darken over time. This is
normal and should not be mistaken for contam-
ination.
(a) If fluid level is abnormally low, look for evi-
dence of leaks at calipers, wheel cylinders, brake
lines, and master cylinder.
(b) If fluid appears contaminated, drain out a
sample to examine. System will have to be flushed
if fluid is separated into layers, or contains a sub-
stance other than brake fluid. The system seals
and cups will also have to be replaced after flush-
ing. Use clean brake fluid to flush the system.
(4) Check parking brake operation. Verify free
movement and full release of cables and pedal. Also
note if vehicle was being operated with parking
brake partially applied.
(5) Check brake pedal operation. Verify that pedal
does not bind and has adequate free play. If pedal
lacks free play, check pedal and power booster for
being loose or for bind condition. Do not road test
until condition is corrected.
(6) Check booster vacuum check valve and hose.
(7) If components checked appear OK, road test
the vehicle.
5 - 2 BRAKES - BASEVA

ROAD TESTING
(1) If complaint involved low brake pedal, pump
pedal and note if it comes back up to normal height.
(2) Check brake pedal response with transmission
in Neutral and engine running. Pedal should remain
firm under constant foot pressure.
(3) During road test, make normal and firm brake
stops in 25-40 mph range. Note faulty brake opera-
tion such as low pedal, hard pedal, fade, pedal pulsa-
tion, pull, grab, drag, noise, etc.
(4) Attempt to stop the vehicle with the parking
brake only and note grab, drag, noise, etc.
PEDAL FALLS AWAY
A brake pedal that falls away under steady foot
pressure is generally the result of a system leak. The
leak point could be at a brake line, fitting, hose, or
caliper/wheel cylinder. If leakage is severe, fluid will
be evident at or around the leaking component.
Internal leakage (seal by-pass) in the master cylin-
der caused by worn or damaged piston cups, may
also be the problem cause.
An internal leak in the ABS or RWAL system may
also be the problem with no physical evidence.
LOW PEDAL
If a low pedal is experienced, pump the pedal sev-
eral times. If the pedal comes back up worn linings,
rotors, drums, or rear brakes out of adjustment are
the most likely causes. The proper course of action is
to inspect and replace all worn component and make
the proper adjustments.
SPONGY PEDAL
A spongy pedal is most often caused by air in the
system. However, thin brake drums or substandard
brake lines and hoses can also cause a spongy pedal.
The proper course of action is to bleed the system,
and replace thin drums and substandard quality
brake hoses if suspected.
HARD PEDAL OR HIGH PEDAL EFFORT
A hard pedal or high pedal effort may be due to
lining that is water soaked, contaminated, glazed, or
badly worn. The power booster or check valve could
also be faulty.
PEDAL PULSATION
Pedal pulsation is caused by components that are
loose, or beyond tolerance limits.
The primary cause of pulsation are disc brake
rotors with excessive lateral runout or thickness vari-
ation, or out of round brake drums. Other causes are
loose wheel bearings or calipers and worn, damaged
tires.NOTE: Some pedal pulsation may be felt during
ABS activation.
BRAKE DRAG
Brake drag occurs when the lining is in constant
contact with the rotor or drum. Drag can occur at one
wheel, all wheels, fronts only, or rears only.
Drag is a product of incomplete brake shoe release.
Drag can be minor or severe enough to overheat the
linings, rotors and drums.
Minor drag will usually cause slight surface char-
ring of the lining. It can also generate hard spots in
rotors and drums from the overheat-cool down pro-
cess. In most cases, the rotors, drums, wheels and
tires are quite warm to the touch after the vehicle is
stopped.
Severe drag can char the brake lining all the way
through. It can also distort and score rotors and
drums to the point of replacement. The wheels, tires
and brake components will be extremely hot. In
severe cases, the lining may generate smoke as it
chars from overheating.
Common causes of brake drag are:
²Seized or improperly adjusted parking brake
cables.
²Loose/worn wheel bearing.
²Seized caliper or wheel cylinder piston.
²Caliper binding on corroded bushings or rusted
slide surfaces.
²Loose caliper mounting.
²Drum brake shoes binding on worn/damaged
support plates.
²Mis-assembled components.
²Long booster output rod.
If brake drag occurs at all wheels, the problem
may be related to a blocked master cylinder return
port, or faulty power booster (binds-does not release).
BRAKE FADE
Brake fade is usually a product of overheating
caused by brake drag. However, brake overheating
and resulting fade can also be caused by riding the
brake pedal, making repeated high deceleration stops
in a short time span, or constant braking on steep
mountain roads. Refer to the Brake Drag information
in this section for causes.
BRAKE PULL
Front brake pull condition could result from:
²Contaminated lining in one caliper
²Seized caliper piston
²Binding caliper
²Loose caliper
²Rusty caliper slide surfaces
²Improper brake pads
²Damaged rotor
VABRAKES - BASE 5 - 3
BRAKES - BASE (Continued)