Taylor-Dunn Tiger TC-030-60, Operation, Maintenance, And Replacement Parts Manual

Page: 99 / 186

Maintenance, Service, and Repair
Drive Axle: MT-030-60-C
Page 7
Bevel Pinion and Cage Assembly
1. Press inner roller bearing firmly against bevel pinion
shoulder and install inner roller bearing snap ring.
2. Press inner tapered bearing cone firmly against bevel
pinion shoulder.
3. Press tapered bearing cups firmly against the pinion
cage shoulders.
4. Lubricate bearing cups and cones with a light
machine oil.
5. Insert bevel pinion with inner tapered bearing cone
in pinion cage.
6. If assembling a TA268; skip to step #9.
7. If assembling a TA267; position selective spacer over
bevel pinion stem. Press outer tapered bearing cone
firmly against the selective spacer. Rotate pinion
bearing cage several revolutions to assure good
bearing cone to cup contact.
8. While the bevel pinion and cage are still positioned
in a hydraulic press, apply a 25,000 pound axial load
to the bearings. Wrap a string around the 4.23 inch
outer diameter of the pinion cage. Apply a pound
scale to the string and observe the reading required
to rotate the bearing cage. A reading of 2.5 to 7
pounds is required. If the reading is above 7 pounds,
disassemble bevel pinion and cage and replace the
selective spacer with a thicker selective spacer. If
the reading is below 2.5 pounds, disassemble bevel
pinion and cage and replace the selective spacer
with a thinner spacer. Repeat this procedure until
proper scale load is obtained. (If alternate selective
thickness spacers are not available, grind stock from
the existing spacer to increase preload or cut an
additional shim from shim stock and add to the
existing spacer to reduce preload). This completes
the bevel pinion cage assembly, skip to next section.
9. If assembling a TA268; install outer bearing cone,
bevel pinion thrust washer and bevel pinion inner
nut. Tighten the nut to 350 foot pounds. Using an
inch pound torque wrench, check bevel pinion
bearing rolling torque. Tighten or loosen the nut to
achieve 5-15 inch pound rolling torque. Once rolling
torque is correct, install bevel pinion nut lock and
bevel pinion outer nut. Tighten outer nut to 350 foot
pounds and bend lock tabs of nut lock to secure both
inner and outer nuts.
ASSEMBLY
Differential and Bevel Ring Gear Assembly
1. Press the bevel ring gear firmly against shoulder of
flanged differential case half. Install the twelve
capscrews, washers and locknuts securing the bevel
ring gear to the flanged differential case half. Tighten
the locknuts to 60-75 foot pounds.
2. Lubricate the differential pinion gears, pinion thrust
washers, side gears, side gear thrust washers,
spider, flanged differential case half and plain
differential case half using gear lubricant.
3. Assemble differential components into the flanged
differential case half. Install plain differential case half,
aligning with mark on flanged differential case half.
Install 4 differential case capscrews and washers
equally spaced. Loosely tighten the cap screws and
check for free rotation of the differential gearing. If
rotation OK, install remaining capscrews and
washers and tighten all capscrews to 85-115 foot
pounds.
4. If differential tapered bearing cones are to be replaced,
press new bearings squarely against differential case
halves, seating fully.
Main Housing and Differential and Bevel
Ring Gear Assembly
1. If the main housing half tapered bearing cups were
removed from the housing halves, press new tapered
bearing cups squarely into their bores, seating fully
against the housing shoulders.
2. Lubricate the tapered bearing cups and cones and
insert differential and bevel ring gear assembly into
the pinion mount housing half(#). Install new housing
half gasket on housing half flange after applying
sealant to both faces of the gasket.
3. Install plain housing half aligning with mating holes
in the pinion mount housing half. Install the eleven
capscrews, lock washers and nuts. Torque to 65-85
foot pounds.
4. Check for free rotation of differential and bevel ring
gear. If binding observed, disassemble housing
halves, remove differential and ring gear and make
certain that both differential tapered bearing cones
and cups are fully seated against their respective
shoulders.