TM-5-3805-254-14-P-2
TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW, IHC MODEL F-5070 (CCE)
TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT AND DEPT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS INFORMATION AND SUPPLEMENTAL MAINTENANCE INSTRUCTIONS)
JUNE 1980
TM-5-3805-254-14-P-2 - Page 637 of 894
STEERING
TRUCK SERVICE MANUAL
replace the shaft.
Check the relief valve sub-assembly for free movement
in the cover bore. Remove burrs from the valve by
polishing, but do not round off the corners of the lands.
Do not attempt to rework the valve bore. If the bore is
damaged, replace the cover.
REASSEMBLY
Coat all parts with hydraulic fluid to facilitate reassembly
and provide initial lubrication. Use small amounts of
petroleum jelly to hold "O" rings in place during
assembly.
1. If the cover has a through bore, insert the valve in the
bore, small land first.
Then install the spring and plug.
On pumps having a blind bore, first install the spring,
then the valve with hexagon head end first. Follow this
with the snap ring being certain it is firmly seated in the
groove, then install the plug. Install the screen and plug
in the cover.
2. Press the shaft into the front bearing while supporting
the bearing inner race.
NOTE:
Bearing should seat
against shoulder on shaft.
3. Press the inner bearing into the body, using a driver or
adapter which contacts the outer race only. NOTE:
Make
sure the bearing is firmly seated in the body.
4. Before assembling the shaft seal, determine the
correct position of the seal lip. Double lip seals are
assembled with the spring toward the rotor end of shaft.
Single lip seals have two pressure holes, which are
assembled toward the drive end of the shaft.
5. Press the seal firmly in place and lubricate the lip with
petroleum jelly.
6. Slide the drive shaft into the body until the bearing is
seated. Tap lightly on the end of the shaft if necessary.
7. Install the bearing snap ring in body.
8. Install new "O" rings in the body and cover.
9. Insert the ring locating pins in the body and assemble
the ring aligning the scribe marks previously made before
disassembly.
10. Install the rotor on the shaft and insert the vanes in
the rotor slots. Be certain the radius edges of the vanes
are toward the cam ring.
11. Place the pressure plate on the locating pins and flat
against the ring.
12. Apply a small amount of petroleum jelly to one end of
spring and position in recess in the pressure plate.
13. Carefully install the cover aligning the marks
previously made before disassembly. Install the cover
screws and torque to 70 ft. lbs.
14. Turn the shaft by hand to insure that there is no
internal binding. Then install the shaft key if so equipped.
LUBRICATION
Sheppard Steering Gears use SAE 10W-30 engine oil.
630
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