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Groundsmaster 4500--D/4700--D Page 6 -- 5 Axles, Planetaries and Brakes
CAUTION
When changing attachments, tires or perform-
ingother service,use correctblocks, hoistsand
jacks to raise and support machine. Make sure
machine is parked on a solid level surface such
as a concrete floor. Prior to raising machine, re-
move any attachments that may interfere with
the safe and proper raising of the machine. Al-
ways chock or block wheels. Use appropriate
jack standsto support theraised machine. Ifthe
machine is not properly supported by jack
stands, the machine may move or fall, which
may result in personal injury.
3. Chockrear wheels andjack up frontof machine(see
JackingInstructions inChapter 1 -- Safety).Supportma-
chine with appropriate jack stands.
4. Remove wheel assembly.
5. Remove hydraulic wheel motor (see Front Wheel
Motors in Service and Repairs section of Chapter 4 --
Hydraulic System).
6. Disconnect brake cable from pull rod on brake.
NOTE: Be careful to not drop splined brake shaft as
brake assembly is removed.
7. Support brake assembly and remove flange head
cap screws(item 11) securing brakeassembly toframe.
Remove brake assembly.
8. Remove splined brake shaft.
9. Completebrake inspection andrepair (seeBrake In-
spection and Repair in this section).
Brake Assembly Installation (Fig. 1)
NOTE: The stepped end of the splined brake shaft
must be aligned toward the hydraulic wheel motor (Fig.
2).
1. Install splined brake shaft into brake assembly.
2. Apply Loctite Gasket Sealant #2 (or equivalent) to
sealing surfaces of new gasket (item 19). Apply gasket
to brake assembly.
3. Install brake assembly onto frame, aligning splined
brake shaft with input shaft on planetary wheel drive.
4. Install flange head screws (item 11) to secure brake
assembly toframe. Tighten screwsin a crossingpattern
to a torque from 75 to 85 ft--lb (102 to 115 N--m).
5. Install brake cable to pull rod on brake assembly.
Brake cable end should be completely threaded onto
pull rod before tightening jam nut.
6. Install new o--ring on hydraulic wheel motor. Install
wheel motor (see Front Wheel Motors in Service and
Repairssectionof Chapter 4-- HydraulicSystem).Make
sure that mounting cap screws are torqued from 75 to
85 ft--lb (102 to 115 N--m).
Failure to maintain proper wheel lug nut torque
could result in failure or loss of wheel and may
result in personal injury.
WARNING
7. Install wheel assembly.
8. Lower machine to ground. Torque lug nuts from 85
to 100 ft--lb (116 to 135 N--m).
9. Make sure drain plug is installed in bottom of brake
assembly (Fig. 3). Fill planetary wheel drive/brake as-
sembly with SAE 85W--140 gear lube.
10.Check for proper brake operation and adjust brake
cables if necessary.
1. Splined brake shaft step
2. Hydraulic motor end
3. Planetary assembly end
Figure 2
3
1
2
1. Brake housing
2. Check plug
3. Drain plug
Figure 3
2
1
3
Axles, Planetaries
and Brakes