DODGE RAM 1500 1998 2.G Workshop Manual

Fig. 24 140.5 IN WHEELBASE - HEAVY DUTY - 2 WHEEL DRIVE
13 - 18 FRAMES & BUMPERSDR
FRAME (Continued)

Fig. 25 140.5 IN WHEELBASE - HEAVY DUTY - 4 WHEEL DRIVE
DRFRAMES & BUMPERS 13 - 19
FRAME (Continued)

Fig. 26 160.5 IN WHEELBASE - HEAVY DUTY - 2 WHEEL DRIVE
13 - 20 FRAMES & BUMPERSDR
FRAME (Continued)

Fig. 27 160.5 IN WHEELBASE - HEAVY DUTY - 4 WHEEL DRIVE
DRFRAMES & BUMPERS 13 - 21
FRAME (Continued)

SPECIFICATIONS - TORQUE
TORQUE SPECIFICATIONS
DESCRIPTION N´m Ft. Lbs. In. Lbs.
Cab mount bolts 81 60 Ð
Cargo box bolts 108 80 Ð
Front crossmember bolts - 2WD (light duty only) 61 45 Ð
Front crossmember bolts - 2WD (heavy duty only) 75 55 Ð
Front crossmember bolts - 4WD (light duty only) 102 75 Ð
Front skid plate bolts 34 25 Ð
Lower bumper support bracket bolt 54 40 Ð
Radiator crossmember bolts - lower 28 21 Ð
Radiator crossmember bolts - upper 28 21 Ð
Rear crossmember (light duty only) 102 75 Ð
Rear crossmember (heavy duty only) 115 85 Ð
Rear spring shackle bolts 163 120 Ð
Spare tire winch bolts 41 30 Ð
Trailer hitch reinforcement bracket bolt 170 125 Ð
Transfercase skid plate bolts 34 25 Ð
Transercase skid plate crossmember bolts 34 25 Ð
Transmission mount to crossmember nuts 54 40 Ð
FRONT CROSSMEMBER
REMOVAL
(1) Raise and support the vehicle. (Refer to
LUBRICATION & MAINTENANCE/HOISTING -
STANDARD PROCEDURE)
(2) Remove the front skid plate, if equipped. (Refer
to 13 - FRAME & BUMPERS/FRAME/FRONT SKID
PLATE - REMOVAL)
(3) Remove the bolts and remove the crossmember.
(Fig. 28) or (Fig. 29)
INSTALLATION
(1) Install the crossmember.
(2) Install the bolts;
²On light duty 2WD vehicles, tighten the bolts to
61 N´m (45 ft. lbs.).
²On light duty 4WD vehicles, tighten the bolts to
102 N´m (75 ft. lbs.).
²On heavy duty 2WD vehicles, tighten the bolts
to 75 N´m (55 ft. lbs.).
(3) Install the front skid plate, if equipped. (Refer
to 13 - FRAME & BUMPERS/FRAME/FRONT SKID
PLATE - INSTALLATION)
Fig. 28 FRONT CROSSMEMBER - 2WD
1 - CROSSMEMBER
2 - BOLTS (2 PER SIDE)
13 - 22 FRAMES & BUMPERSDR
FRAME (Continued)

FRONT SKID PLATE
REMOVAL
(1) Raise and support the vehicle. (Refer to
LUBRICATION & MAINTENANCE/HOISTING -
STANDARD PROCEDURE)
(2) Remove the bolts. (Fig. 30)
(3) Slide skid plate back off of the crossmember
and remove.
INSTALLATION
(1) Snap the rear tabs over the front crossmember
and install the skid plate.
(2) Install the bolts and tighten to 34 N´m (25 ft.
lbs.).
FRONT TOW HOOK ASSEMBLY
REMOVAL
(1) Remove front bumper. (Refer to 13 - FRAME &
BUMPERS/BUMPERS/FRONT BUMPER -
REMOVAL)
(2) Remove the bolts and remove the tow hook
assembly. (Fig. 31) and (Fig. 32)
INSTALLATION
(1) Install the tow hook assembly and bolts hand
tight.
(2) Install the front bumper. (Refer to 13 - FRAME
& BUMPERS/BUMPERS/FRONT BUMPER -
INSTALLATION)
(3) Tighten the tow hook bolts to 68 N´m (50 ft.
lbs.).
Fig. 29 FRONT CROSSMEMBER - 4WD
1 - BOLTS (2 PER SIDE)
2 - CROSSMEMBER
Fig. 30 FRONT SKID PLATE
1 - FRONT CROSSMEMBER
2 - FRONT SKID PLATE
3 - BOLTS (2)
Fig. 31 FRONT TOW HOOK ASSEMBLY
1 - BUMPER CENTER SUPPORT BRACKET
2 - BOLTS (6)
3 - TOW HOOK ASSEMBLY
DRFRAMES & BUMPERS 13 - 23
FRONT CROSSMEMBER (Continued)

TRANSMISSION
CROSSMEMBER
REMOVAL
(1) Raise and support the vehicle. (Refer to
LUBRICATION & MAINTENANCE/HOISTING -
STANDARD PROCEDURE)
(2) Remove the transfercase skid plate, if
equipped. (Refer to 13 - FRAME & BUMPERS/
FRAME/TRANSFER CASE SKID PLATE -
REMOVAL)
(3) Support the transmission with a suitable lifting
device.
(4) Remove the transmission mount nuts. (Fig. 33)
or (Fig. 34)
(5) Remove the bolts and remove the crossmember.
INSTALLATION
(1) Install the crossmember and install the bolts.
²On light duty vehicles, tighten the bolts to 102
N´m (75 ft. lbs.).
²On heavy duty vehicles, tighten the bolts to 115
N´m (85 ft. lbs.).
(2) Install the transmission mount nuts and
tighten to 54 N´m (40 ft. lbs.).(3) Remove the transmission support.
(4) Install the transfercase skid plate. (Refer to 13
- FRAME & BUMPERS/FRAME/TRANSFER CASE
SKID PLATE - INSTALLATION)
Fig. 32 FRONT TOW HOOK ASSEMBLY ± HEAVY
DUTY
1 - BOLTS (4 PER HOOK)
2 - HEAVY DUTY TOW HOOKS (2)
3 - BUMPER CENTER SUPPORT BRACKETS
Fig. 33 REAR CROSSMEMBER - 2WD
1 - TRANSMISSION MOUNT
2 - REAR CROSSMEMBER
3 - TRANSMISSION MOUNT NUTS (2)
4 - CROSSMEMBER BOLTS (2 PER SIDE)
Fig. 34 REAR CROSSMEMBER - 4WD
1 - TRANSMISSION MOUNT
2 - TORSION BAR
3 - CROSSMEMBER BOLTS (3 PER SIDE)
4 - REAR CROSSMEMBER
5 - TRANSMISSION MOUNT NUTS (2)
13 - 24 FRAMES & BUMPERSDR
FRONT TOW HOOK ASSEMBLY (Continued)

TRAILER HITCH
REMOVAL
(1) Remove the rear bumper. (Refer to 13 -
FRAME & BUMPERS/BUMPERS/REAR BUMPER -
REMOVAL)
(2) Remove the hitch bolts. (Fig. 35) and (Fig. 36)
(3) Disconnect all wire harness support push pins.
(4) Remove the rear two cargo box bolts and loosen
the remaining bolts. (Refer to 23 - BODY/EXTERI-
OR/CARGO BOX - REMOVAL)
(5) Using a suitable lifting device, lift and support
the rear of the cargo box and remove the hitch.
INSTALLATION
(1) Install the hitch onto the frame rails and make
sure the locators on the inside of the hitch brackets
are engaged with the holes in the top of the frame
rails properly.
(2) Lower the cargo box and install the rear bolts.
(Refer to 23 - BODY/EXTERIOR/CARGO BOX -
INSTALLATION)
(3) Install the hitch bolts and tighten to 170 N´m
(125 ft. lbs.).
(4) Connect all wire harness support push pins.
(5) Install the rear bumper. (Refer to 13 - FRAME
& BUMPERS/BUMPERS/REAR BUMPER - INSTAL-
LATION)
Fig. 35 TRAILER HITCH ± LIGHT DUTY
1 - LOCATING TAB HOLE
2 - LOCATING PIN HOLE
3 - U-NUTS (2)
4 - BUMPER SUPPORT BRACKETS5 - HITCH
6 - BUMPER BRACKET BOLTS (4)
7 - HITCH BOLTS (4)
DRFRAMES & BUMPERS 13 - 25

TRANSFER CASE SKID PLATE
REMOVAL
(1) Raise and support the vehicle. (Refer to
LUBRICATION & MAINTENANCE/HOISTING -
STANDARD PROCEDURE)
(2) Support the skid plate and remove the bolts.
(Fig. 37)
(3) Remove the skid plate.
(4) Support the skid plate crossmember and
remove the bolts.
(5) Remove the skid plate crossmember.
INSTALLATION
(1) Install the skid plate crossmember and install
the bolts.
(2) Tighten the bolts to 34 N´m (25 ft. lbs.).
(3) Install the skid plate and install the bolts.
(4) Tighten the bolts to 34 N´m (25 ft. lbs.).
Fig. 37 TRANSFER CASE SKID PLATE
1 - CROSSMEMBER BOLTS (4)
2 - SKID PLATE CROSSMEMBER
3 - SKID PLATE
4 - SKID PLATE BOLTS (4)
Fig. 36 TRAILER HITCH ± HEAVY DUTY
1 - LOCATING TAB HOLE
2 - LOCATING PIN HOLE
3 - U-NUTS (2)
4 - BUMPER SUPPORT BRACKETS5 - HITCH
6 - HITCH TO FRAME NUTS (2)
7 - BUMPER BRACKET BOLTS (4)
8 - HITCH BOLTS (6)
13 - 26 FRAMES & BUMPERSDR
TRAILER HITCH (Continued)

FUEL SYSTEM
TABLE OF CONTENTS
page page
FUEL DELIVERY - GAS....................1
FUEL INJECTION - GAS...................21FUEL DELIVERY - DIESEL.................44
FUEL INJECTION - DIESEL................68
FUEL DELIVERY - GAS
TABLE OF CONTENTS
page page
FUEL DELIVERY - GAS
DESCRIPTION..........................1
OPERATION............................2
STANDARD PROCEDURE - FUEL SYSTEM
PRESSURE RELEASE...................2
SPECIFICATIONS
FUEL SYSTEM PRESSURE..............3
TORQUE - FUEL SYSTEM - EXCEPT
DIESEL..............................3
SPECIAL TOOLS
FUEL SYSTEM........................5
FUEL FILTER/PRESSURE REGULATOR
DESCRIPTION..........................5
OPERATION............................6
FUEL LEVEL SENDING UNIT / SENSOR
DESCRIPTION..........................6
OPERATION............................6
REMOVAL.............................7
INSTALLATION..........................7
FUEL LINES
DESCRIPTION..........................7
QUICK CONNECT FITTING
DESCRIPTION..........................8STANDARD PROCEDURE - QUICK-CONNECT
FITTINGS............................8
FUEL PUMP
DESCRIPTION.........................11
OPERATION...........................11
FUEL PUMP MODULE
DESCRIPTION.........................11
OPERATION...........................11
REMOVAL.............................12
INSTALLATION.........................12
FUEL RAIL
DESCRIPTION.........................12
OPERATION...........................12
REMOVAL.............................13
INSTALLATION.........................15
FUEL TANK
DESCRIPTION.........................17
OPERATION...........................17
REMOVAL- EXCEPT DIESEL..............17
INSTALLATION - EXCEPT DIESEL..........19
INLET FILTER
REMOVAL.............................20
INSTALLATION.........................20
FUEL DELIVERY - GAS
DESCRIPTION
The fuel delivery system consists of:
²a fuel pump module containing the electric fuel
pump, fuel filter/fuel pressure regulator, fuel gauge
sending unit (fuel level sensor) and a secondary fuel
filter located at the bottom of the pump module
²fuel tubes/lines/hoses
²a combination fuel filter/fuel pressure regulator
²quick-connect fittings²fuel injector rail
²fuel tank
²fuel tank filler/vent tube assembly
²fuel tank filler tube cap
²accelerator pedal
²throttle cable
Certain fuel delivery components can be found in
(Fig. 1).
DRFUEL SYSTEM 14 - 1