Page 2449 of 5267

GEAR - LINK/COIL
DESCRIPTION
The power steering gear is a recirculating ball type
gear (6). The gear ratio’s used are 12.5:1.
OPERATION
The gear acts as a rolling thread between the worm shaft and rack piston. Theworm shaft is supported by a thrust
bearing at the lower end and a bearing assembly at the upper end. When the worm shaft is turned from input from
the steering column the rack piston moves. The rack piston teeth mesh with the pitman shaft. Turning the worm
shaft, turns the pitman shaft, which turns the steering linkage.
REMOVAL
1. Place the front wheels in a straight-ahead position.
NOTE: The steering column on vehicles with an automatic transmission may not be equipped with an inter-
nal locking shaft that allows the ignition key cylinder to be locked with the key. Alternative methods of lock-
ing the steering wheel for service will have to be used.
2. Lock the steering wheel.
3. Siphon out as much power steering fluid as possible.
4. Disconnect and cap the fluid hoses from steering gear (Refer to 19 - STEERING/PUMP/HOSES - REMOVAL).
Page 2456 of 5267

PITMAN SHAFT SEAL
REMOVAL
GAS
1. Separate the pitman arm from the gearbox (Refer to 19 - STEERING/LINKAGE/PITMAN ARM - REMOVAL).
2. Clean exposed end of pitman shaft and housing with a wire brush.
3. Rotate the steering wheel from stop to stop and count the number of turns.
4. Center the steering wheel by rotating it from the stop back 1 1/2 turns to achieve center position.
5. Remove the pitman shaft cover bolts.
NOTE: The pitman shaft will not clear the housing if it is not centered.
6. Remove the pitman shaft from the gear.
7. Remove dust seal from the housing with the seal
remover adapter tool 8990 (2).
CAUTION: Use care not to score the housing bore
when prying out seals and washer.
8. Remove retaining ring with snap ring pliers.
9. Remove washer from the housing.
NOTE: Tighten the slide hammer seal remover
adapter tool 8990 into the seal using wrenches, in
order to make a tight fit to pull the seal out. If this
is not performed the seal may tear on the removal
making it difficult to remove.
10. Remove oil seal from the housing with the seal
remover adapter tool 8990 (2) along with slide
hammer puller C-3752.
DIESEL
1. Separate the pitman arm from the gearbox (Refer to 19 - STEERING/LINKAGE/PITMAN ARM - REMOVAL).
2. Remove the steering gear box (Refer to 19 - STEERING/GEAR - REMOVAL).
3. Install the steering gear in a soft jawed bench vise.
4. Clean exposed end of pitman shaft and housing with a wire brush.
5. Rotate the input shaft with a 12 point socket (2)
from stop to stop and count the number of turns.
6. Center the input shaft (4) by rotating it from the
stop 1/2 of the total amount of turns.
7. Remove the pitman shaft cover bolts.
Page 2457 of 5267

NOTE: The pitman shaft will not clear the housing if it is not centered.
8. Remove the pitman shaft from the gear (1).
9. Remove dust seal from the housing with the seal
remover adapter tool 8990 (2).
CAUTION: Use care not to score the housing bore
when prying out seals.
10. Removeretainingringwithsnapringpliers.
11. Remove washer from the housing.
NOTE: Tighten the slide hammer seal remover
adapter tool 8990 into the seal using wrenches, in
order to make a tight fit to pull the seal out. If this
is not performed the seal may tear on the removal
making it difficult to remove.
12. Remove oil seal from the housing with the seal
remover adapter tool 8990 (2) along with slide hammer puller C-3752.
INSTALLATION
GAS
NOTE: Generous amounts of the high temperature
grease from the seal kit should be applied to areas
between the pitman shaft bearing and oil seals
and also between the dust seals and snap ring.
1. Coat the oil seal and washer withhigh temp
grease.
NOTE: Install the oil seal with the lip facing
inward. Flat side of the oil seal should be against
the washer.
2. Install the oil seal with pitman shaft seal installer
tool 8989 driver (2) and C-4171 handle (1).
3. Install backup washer.
4. Install the retainer ring with snap ring pliers.
5. Coat the dust seal withhigh temp grease.
6. Install the dust seal with a driver (2) and handle (1).
Page 2458 of 5267

7. Install pitman shaft protective seal protector 8993
(2)overtheshaft.
8. Install the pitman shaft into the steering gear until it
fully seats into the bearing.
9. Install the new cover bolts and tighten to 68 Nꞏm
(50 ft. lbs.).
10. Install the pitman arm (Refer to 19 - STEERING/
LINKAGE/PITMAN ARM - INSTALLATION).
DIESEL
NOTE: Generous amounts of the high temperature
grease from the seal kit should be applied to areas
between the pitman shaft bearing and oil seals
and also between the dust seals and snap ring.
1. Coat the oil seal and washer withhigh temp
grease.
NOTE: Install the oil seal with the lip facing
inward. Flat side of the oil seal should be against
the washer.
2. Install the oil seal with pitman shaft seal installer
8989 driver (2) and C-4171 handle (1).
3. Install backup washer.
4. Install the retainer ring with snap ring pliers.
5. Coat the dust seal withhigh temp grease.
6. Install the dust seal with pitman shaft seal installer 8989 driver (2) andC-4171handle(1).
7. Install pitman shaft protective seal protector 8993
(2)overtheshaft(1).
8. Install the pitman shaft into the steering gear until it
fully seats into the bearing.
9. Install the new cover bolts and tighten to 68 Nꞏm
(50 ft. lbs.).
10. Install the steering gear (Refer to 19 - STEER-
ING/GEAR - INSTALLATION).
11. Install the pitman arm (Refer to 19 - STEERING/
LINKAGE/PITMAN ARM - INSTALLATION).
12. Perform a wheel alignment (Refer to 2 - SUS-
PENSION/WHEEL ALIGNMENT - STANDARD
PROCEDURE).
Page 2462 of 5267
16. Using slide hammer puller C-3752 (1) with seal
remover adapter 8990 (1) remove the oil seal.
INSTALLATION
1. Inspect the piston teflon seals for damage. Replace
if needed.
NOTE: To replace the teflon seals, use a pick to
remove the teflon o-ring and the rubber o-ring
underneath. Install a new rubber o-ring in the pis-
ton seal grove and a new teflon o-ring over the top
of it.
2. Install the valve into the valve housing (1).
3. Threadtheretainerringintothevalvehousing(1).
Tightento97Nꞏm(72ft.lbs.).
NOTE: It is very important to make sure to com-
pensate for the added length of the torque wrench
when torquing to proper specifications.
4. Install the retainer ring set screw. Tighten to 2.26
Nꞏm (20 in. lbs.)
5. Clean the steering gear housing.
CAUTION: Valve assembly must be centered to the
housing (1).
6. Install the valve assembly (2) into the steering
gear. Tighten the new bolts to 54 Nꞏm (40 ft. lbs.)
Page 2463 of 5267

7. Install the input shaft seal protector 8986 (2).
8. Coat the new seal inhigh temp greaseand Install
the new oil seal using the input shaft seal installer
tool 8987 driver (2) and C-4171 handle (3).
NOTE: Drive the oil seal into the housing until the
outer edge does not quite clear the snap ring
groove.
9. Insert the snap ring into the housing. Using the
input shaft seal installer 8987 driver (2) and C-4171
handle (3) push the snap ring and oil seal together
until the snap ring seats in the groove.
NOTE: Generous amounts of the high temperature
grease from the seal kit should be applied to areas
between the pitman shaft bearing and oil seals
and also between the dust seals and snap ring.
10. Install the new dust seal usinghigh temp grease, special tool C-4171 (handle) (3) and 8987 (driver) (2).
11. Check to make sure the gear is centered in the
middle tooth (1) before installing the pitman shaft.
12. Install the pitman shaft into the steering gear (Refer to 19 - STEERING/GEAR/PITMAN SHAFT - INSTALLA-
TION).
13. Perform over-center meshload adjustment (Refer to 19 - STEERING/GEAR- ADJUSTMENTS).
14. Install the steering gear to the vehicle (Refer to 19 - STEERING/GEAR - INSTALLATION).
15. Perform a wheel alignment (Refer to2 - SUSPENSION/WHEEL ALIGNMENT - STANDARD PROCEDURE).
Page 2471 of 5267
page page
LINKAGE - LINK/COIL
DESCRIPTION ................................ 67
STANDARD PROCEDURE
LUBRICATION .............................. 67
SPECIFICATIONS
TORQUE ................................... 68
SPECIAL TOOLS
STEERING LINKAGE ........................ 69
DAMPER
REMOVAL .................................... 70
INSTALLATION ............................... 70
DRAG LINK
REMOVAL .................................... 71INSTALLATION ............................... 71
PITMAN ARM
REMOVAL .................................... 72
INSTALLATION ............................... 73
TIE ROD END
REMOVAL .................................... 74
INSTALLATION ............................... 74
TRACK BAR
REMOVAL .................................... 75
INSTALLATION ............................... 75
Page 2472 of 5267
LINKAGE - LINK/COIL
DESCRIPTION
Thesteeringlinkageiscomprisedofatierodend(5),
tie rod, drag link (7), steering damper (9) and pitman
arm (2).
CAUTION: If any steering components are
replaced or serviced an alignment must be per-
formed.
NOTE: To avoid damaging ball stud seals, use
Puller C-3894–A (3) or an appropriate puller to
remove tie rod ends (5).
STANDARD PROCEDURE
LUBRICATION
Periodic lubrication of the steering system components is required. Refer to Lubrication And Maintenance for the
recommended maintenance schedule.
The following components must be lubricated:
Tie rod
Tie rod end
Drag link