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 368 of 894
TRUCK SERVICE MANUAL
3. Examine injector rocker lever sockets for a true
fit on injection links.
Check sockets with a radius gauge
or by observation of a small protrusion at bottom of
socket.
Remove and discard damaged or badly worn
injector rocker lever sockets by drilling a small hole in
lever above socket and knock out with a small punch and
hammer; after socket is removed, weld hole closed,
install and stake plug in hole.
4. Check rocker lever bushings for scratches,
pitting or scoring.
Check rocker lever bushing inside
diameter with inside micrometers or small bore gauge.
If
bushing exceeds 1.1286 inch [28.664 mm], press out
bushing with ST-691 Mandrel and Block.
Clean lever
thoroughly and dry with compressed air.
See Parts
Catalog for current replacement bushing part numbers.
5. Install new bushing with ST-691 and arbor press.
a. On injector and exhaust valve levers, install
bushings so oil holes to crosshead nose or injector link
and adjusting screw are open for oil flow.
b. On intake valve levers, with oil drilling to
crosshead nose end, install bushing so "nose" hole is
closed and so "slot hole" is in line with adjusting screw oil
hole.
Do not bore steel bushings.
6. Check intake and exhaust rocker lever-to-
crosshead contact surfaces.
If worn or damaged, grind
to original contour or replace with new rocker lever.
7. Check rocker lever shaft for wear or scoring.
If
shaft has shoulders or ridges due to rocker lever action
on shaft,
replace with new rocker lever shaft.
See Table
3-1 (2) for shaft dimensions.
Flush out shaft bore and
dry thoroughly.
8. Current shafts are 12.880 inch [327.15 mm]
long, older shafts are 13, 060 inch [331.72 mm].
Older
shafts can be reduced to new shaft length if oil leakage
has been encountered at the shaft cup seal plug.
Machine equal amount from each end of shaft.
ASSEMBLY
1. Install adjusting screws and locknuts in rocker
levers.
2. Install cup type plug in rocker lever shaft with
ST-863 Cup Plug Driver.
Coat rocker lever shaft with
clean lubricating oil.
3. Start shaft into housing, install levers on shaft as
shaft is pushed through housing.
See Fig.
3-4 for
correct position of levers.
a. Install exhaust (1), injector (2) and intake levers (3).
b. Install intake (4), injector (5) and exhaust levers (6).
4. Index locking hole in shaft with locking hole in
housing
Back to Top
