torque ISUZU TROOPER 1995 Service Manual

STEERING WHEEL FREE PLAY ADJUST­
MENT
IL•I INSPECTION (Fig. 381-4)
1. With the tires in the straight-ahead position, check
the
amount of steering wheel play by turning the
wheel in both directions until the tires begin to
move.
NOTE:
The wheel free play should be checked with the engine
running.
~~~~F-r-ee--pl-ay---m-m--(in_)_,j--o----3-0-(0----1-.1-8~)-
2. Also check the steering wheel for play and
looseness in mount by moving it back and forth
and sideways.
While driving, check for hard
steering, steering
shimmy and tendency to pull to
one side.
POWER STEERING GEAR AND PUMP 381-5
IEEI ADJUSTMENT (Fig. 381-5)
1. Align the front wheels properly in the straight
ahead position.
2. Loosen the lock nut on the adjusting screw of the
steering gear.
3. Turn the adjust screw clockwise to decrease free
play or counter-clockwise to incre~se.
4. After check of specified free play, t1ghten the lock
nut to specified torque.
~~~ Torque N·m (lb·ft) I 41 (30)
Fig. 381-5

lJ
Fig. 381-9
l••f INSTALLATION
6. Gear box (Fig. 381-1 0)
l£tj• Align the setting marks made at removal.
5. Gear box mounting bolt and nut
1~1 Torque N·m (lb·ft) 44 (33)
4. Coupling clamp bolt
~~~ Torque N·m (lb·ft) 25 (18)
3. Pitman arm (Fig. 381·11)
l£tj• Align the notched tooth.
2. Nut
~~~---T-o-rq_u_e __ N_·_m_(_lb-.ft-)~~---2-1_6_(1_5_9_) __ ___
1. Pipe
~~~--T-o-rq_u_e __ N--m----(-lb-.ft-)~-------4-4-(-33_) ____ _
POWER STEERING GEAR AND PUMP 381-7
Fig. 381-10
Fig. 381-11

381-8 POWER STEERING GEAR AND PUMP
POWER STEERING PUMP
<
4
Removal steps
1. Hose, suction
2. Hose,
flexible 3. Adjust bolt 4. Belt 5. Bolt 6. Pump assembly and pulley
7. Pulley
8. Adjust
plate
9. Pump assembly
Installation
steps To install, follow the removal steps in the reverse order.
Fig. 381-12
B REMOVAL
Preparation: • Place a drain pan below the pump.
1. Hose, suction
2. Hose, flexible
3. Adjust bolt
4. Belt
5.
6.
7.
8.
9.
Bolt
Pump assembly and pulley
Pulley
Adjust plate
Pump assembly
1•+1 INSTALLATION
9. Pump assembly
8. Adjust plate
~~~ Torque N·m (lb·ft) 56 (41)
7. Pulley
~~~ Torque N·m (lb·ft)
6. Pump assembly and pulley
5. Bolt
~~~ Torque N·m (lb·ft)
4.
3.
Belt
Adjust bolt
78 (58)
46 (34)
• After adjusting drive belt tension, tighten bolt
to specified torque.
I~I_T_o_rq....:...u_e_N_·_m_(_lb_·ft_)____! ___ 4_6...:..(3_4...:_) __ _
2. Hose, flexible
~~~ Torque N·m (lb·ft) 54 (40)
1. Hose, suction
• Fill and bleed the system. Refer to "Bleeding
the Power Steering System" in this section.

381 -12 POWER STEERING GEAR AND PUMP
l•!+l REASSEMBLY
13. Gear box
12.
0-ring (fig. 381-22)
r:::;:, • Apply a thin coat of power steering fluid.
D • Be sure to discard used part, and always use
new part for installation.
11. Seal ring (fig. 381-22)
r:::;:, • Apply a thin coat of power steering fluid.
D • Be sure to discard used part, and always use
new part for installation.
10.
0-ring (fig. 381-22)
r:::;:, • Apply a thin coat of power steering fluid.
D • Be sure to discard used part, and always use
new part for installation.
Seal ring
Fig. 3B1-22
9.
Ball-nut and valve housing assembly
1) It is strongly advisable to always keep the ball
screw and valve housing assembly in a
horizontal position (avoid holding it
vertically), or the rack piston will fall off onto
the end of the worm, causing the rack piston
to slip out of the worm shaft and ball to fall
out (Fig. 3B1-23).
2) Be careful not to drop the 0-ring into the
valve housing.
3) Tighten the valve housing retaining bolts to
the specified torque.
~~~ Torque N·m (lb.ft) I 47 (35)
8. Sector shaft
1) Tape the sector shaft serrations to protect the
seal ring from damage.
2) Align the center tooth of ball nut with that of
the sector shaft (Fig. 3B1-24). Fig.
3B1-23
Fig. 3B1-24
7. 0-ring
6. Top cover assembly
~~~ Torque N-m (lb·ftl I 47 (35)
5. Lock nut
r:cJ Adjust the backlash between the worm gear and
L:D the ball nut (Fig. 3B1-25).
1) With the worm gear rotating, set it to the
straight ahead position.
2) Set the worm shaft preload to below 1 Okg-cm
with the sector shaft adjusting screw.
3) Measure the worm shaft preload with the
worm gear turned 450° both to the right and
to the left.
The worm gear preload in these positions
should be 2-4kg-cm lower than in the straight
ahead position.
4) Lock the sector shaft adjusting screw with the
lock nut.
~~~ Lock nut torque N-m (lb·ft) I 41 (30)
•

381-16 POWER STEERING GEAR AND PUMP
l•!•l REASSEMBL V
20. Rear housing
19. Pin
18. Cam
17. Rotor and vane
r=1 • Install the rotor with punch mark facing the
t=1 front housing (Fig. 3B1-30).
r=1 • Install the vanes with curved face in contact
t=1 with the inner wall of the cam (Fig. 3B1-31 ).
16. Side plate
\fl CAUTION:
Fig. 3B1-30
~
Fig. 3B1-31
"---
Q
'if When installing side plate, be careful not to
damage its inner surface. Damaged side plate
may cause poor pump performance, pump
seizure or oil leakage.
15. Front housing
14.
0-ring
• Be sure to discard used parts, and always use
new parts for installation.
13. 0-ring
• Be sure to discard used parts, and always use
new parts
for installation.
12.
11.
10.
9.
Gasket
• Be sure to discard used parts, and always use
new parts for installation.
Spring
Rear housing and pump cartridge
Bolt
l~I_T_o_rq_u_e_N_·_m_(_lb_·f_tl____. ___ 3_7_(2_7_) __ _
8.
7.
6.
5.
4.
~
3.
2.
1.
~
Oil seal
CAUTION:
When installing the oil seal, be careful not to
damage the oil seal contacting surface of the
housing.
• Be sure to discard used parts, and always use
new parts for installation.
Shaft assembly
Retaining ring
0-ring
• Be sure to discard used parts, and always use
new parts for installation.
Connector
Torque N·m (lb·ft) 74 (54)
0-ring
• Be sure to discard used parts, and always use
new parts for installation.
Pipe, suction
Bolt
Torque N·m (lb·ft) 16 (12)
..

POWER STEERING GEAR AND PUMP 381-17
MAIN DATA AND SPECIFICATIONS
GENERAL SPECIFICATIONS
Steering unit
Type
Gear ratio
Oil pump
Type
Operating
fluid
TORQUE SPECIFICATIONS
Fig. 381-32
Integral, ball screw
15.8: 1
Vane
ATF
DEXRON®-m
N·m (lb.ft)

381-18 POWER STEERING GEAR AND PUMP
TORQUE SPECIFICATIONS (Cont'd) N·m (lb·ft)
25 (18)
Fig. 381-33
SPECIAL TOOLS
ILLUSTRATION TOOL
NO.
TOOL NAME ILLUSTRATION TOOL
NO.
TOOL NAME
~
J-29877-A
Tester: Power steering
~
J-26508
Installer;
Extension housing oil seal
~ J-39213
~ ID ®
Adapter:
Power steering tester
~
J-29107
Remover:
Pitman arm

STEERING LINKAGE 383-1
SECTION 383
STEERING LINKAGE
w CAUTION:
• When fasteners are removed, always reinstall them at the same location from which they were removed. If a
fastener needs
to be replaced, use the correct part number fastener for that application. If the correct part
number fastener is not available, a fastener of equal size and strength (or stronger) may be used. Fasteners
that are not reused, and those requiring thread locking compound, will be called out. The correct torque
value must be used when installing fasteners that require it. If the above conditions are not followed, parts or
system damage could result.
CONTENTS
General Description . . . . . . . . . . . . . . . . . . . . 383-1
On-Vehicle Service .................... 383-2
Center Track Rod Assembly . . . . . . . . . . . 383-2
Outer Track Rod Assembly . . . . . . . . . . . . 383-4
Relay Lever . . . . . . . . . . . . . . . . . . . . . . . . . 383-6 Main
Data
and Specifications ............ 383-8
Torque Specifications
................ 383-8
Special Tools .......................... 383-8
GENERAL DESCRIPTION
The steering linkage consists of a pitman arm, relay
lever,
center track rod and two adjustable outer track
rods.
When the steering
wheel is turned, the gear rotates the
pitman arm
which forces the center track rod to one
side. The outer track rods, connected to the center
track rod
by ball studs, transfer the steering force to the
wheels. The outer track rods are adjustable and are
used
for toe-in adjustments. The center track rod is
supported
by the pitman arm and relay lever. The relay lever
pivots
on a support attached to the frame.
The
overall condition of the steering linkage affects
steering performance.
If parts are bent, damaged,
worn or poorly lubricated, improper and possibly
dangerous steering action will result.
Whenever any steering linkage components are
replied or replaced, check the steering geometry and
front end alignment. Refer to Front End Alignment
(Sec. 3A).
Center track rod assembly
Rod end, inner
Track rod
Rod end, outer
Relay lever---~·--:;:::jo
I
I Outer track rod assembly
Fig. 383-1

3. Nut and cotter pin, relay lever
• Remove relay lever from the center track rod
(Fig. 3B3-5).
1®.1 Remover: J-36831
\flCAUTION:
'VI Be careful not to break the ball joint boot.
4. Center track rod assembly
Fig. 3B3-5
Wtl INSPECTION AND REPAIR
~
Make necessary correction or parts replacement if
wear, damage, corrosion, bending, deteriorations or
any other abnormal condition are found through
inspection.
Check the
following parts.
• Ball joint (Boot, screws and tapered surfaces)
1••1 INSTALLATION
4. Center track rod assembly
3. Nut and cotter pin, relay lever
• Tighten the nutto the specified torque, with just
enough additional torque to align cotter pin
holes. Install new cotter pin.
~~~ Torque N·m (lb·ft) 59 (43)
2. Nut and cotter pin, pitman arm
• Tighten the nut to the specified torque, with just
enough additional torque to align cotter pin
holes. Install new cotter pin.
1~1 Torque N-m (lb·ft) 98 (72)
1.
STEERING LINKAGE 383-3
Nut and cotter pins
• Tighten the nutto the specified torque, with just
enough
additional torque to align cotter pin
holes. Install new cotter pin.
I~I_T_o_rq..;...u_e_N_·m_(l_b_·ft_) ___t_ ___ 9_8_(7_2_) __ _

4. Rod end assembly, outer (Fig. 383-9)
• Apply setting marks to ensure reassembly of
the parts in their original position.
Setting mark
Fig. 3B3-9
5. Lock nut, inner
NOTE:
6.
In either outer rod, the screw on the right side of
the vehicle is threaded counterclockwise.
Rod end, inner (Fig. 383-1 O)
• Apply setting marks to ensure reassembly of
the parts in their original position.
Setting mark
--B--
Fig. 3B3-10
(1!] INSPECTION AND REPAIR
Make necessary correction or parts replacement if
wear, damage, corrosion, bending, deteriorations or
any other abnormal condition are found through
inspection.
Check the
following parts.
• Rod end assembly
STEERING LINKAGE 383-5
1••1 INSTALLATION
6. Rod end, inner
IP.il • Align the setting marks applied during dis-
~ assembly.
5. Lock nut, inner
~~~ Torque N·m (lb·ft) 118 (87)
NOTE:
In either outer rod, the screw on the right side of
the vehicle is threaded counterclockwise.
4. Rod end assembly, outer
IP.il • Align the setting marks applied during dis-
~ assembly.
3. Lock nut, outer
Torque N·m (lb·ft) 118 (87)
2. Nut and cotter pin, knuckle arm
• Tighten the nutto the specified torque, with just
enough additional torque to align cotter pin
holes. Install new cotter pin.
~~~ Torque N·m (lb·ft) ___ ______._ ___ _ 98 (72)
1. Nut and cotter pin, center track rod
• Tighten the nutto the specified torque, with just
enough additional torque to align cotter pin
holes. Install new cotter pin.
~~~ Torque N·m (lb·ft) 98 (72)
NOTE:
If replacing
the track rod, adjust the new track rod
length (Fig. 3B3-11).
I~EI Rod length mm (in) I 328.3 (12.93)
L
Fig. 3B3-11
• Ball joint (Boot, screws and tapered surfaces) NOTE:
Adjust the toe-in. Refer to "Front End Alignment" in
section 3A.