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 843 of 894
GEARS AND CASE
a. Spline fit of lo-lo and underdrive clutch gear (B-
17).
b. Spline fit of direct and overdrive clutch gear (B-
5).
c. Underdrive gear sleeve (B-13).
d. Overdrive gear sleeve (B-10).
Spline and sleeve must be a free fit with mainshaft.
1. For model R8031-R only, place lo-lo and
underdrive clutch gear (B-17) on bench with flange down.
Apply a light coat of grease, approximately 1" wide, to the
ground area above the flange. Assemble one row of 72
needle roller bearings, (B-19) to clutch gear. Assemble
spacer (B-20). Apply light coat of grease and assemble
the second row of 72 needle roller bearings or complete
caged needle bearing.
CAUTION
Do not plug oil holes in gears with
grease.
2. Assemble lo-lo gear (B-12a) to clutch gear (B-17)
by placing (B-12a) clutch teeth toward flanged end of (B-
17). Slide over needles and spacer. Place gear and
sleeve assembly aside.
3. For models R8031-P and Q, in a similar manner,
coat underdrive gear sleeve (B-13) on thrust face and
ground surface with grease and apply two rows of 72
needle bearings (B-14) with spacer (B-15) between.
4. Assemble underdrive gear (B-12) to sleeve and
bearings with clutch teeth of gear away from flanged end.
Place gear and sleeve assembly aside.
5. Place overdrive gear sleeve (B-10) on flat plate
and coat lower 1" with light grease. Assemble one row of
62 needle roller bearings (B-8) to sleeve, add spacer (B-
9) and in a like manner, assemble the second row of 62
needle roller bearings.
6. Assemble overdrive gear (B-7) to sleeve and
bearings with clutch teeth of gear up. Place assembly
aside.
INSTALLATION OF MAINSHAFT:
The diameter of the main drive gears used in the
R8000 Series auxiliaries are larger than the main drive
gear bearing bore in the case. This necessitates
assembly of the drive gear in the case prior to installation
of the mainshaft.
NOTE
Drive gear pocket bearing (A-10) is
made in two pieces. Be sure pocket
bearing is assembled with flanged end of
inner race up or toward mainshaft.
1. For model R8031-R only, position lo-lo gear and
sleeve assembly (B-17 thru B-20) in rear of case with
clutch teeth toward front of case. Mesh with countershaft
gear (C-1). Assemble lo-lo and underdrive clutch collar
(B-16) to lo-lo gear with extended hub toward gear (B-
18).
2. For model R8031-P and Q, place underdrive
gear and sleeve assembly (B-12 thru B-15) in case with
clutching teeth of gear toward lo-lo gear (B-17) and mesh
with countershaft gear (C-10).
Move clutch collar (B-16)
into engagement with underdrive gear (B-12) to hold
alignment.
834
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