Greensmaster 3250--D Page 6 -- 5 Chassis
5. Make sure that lock nut (item 24) on wheel motor
shaft is loosened at least two (2) turns. Use hub puller
(seeSpecialTools inthischapter)toloosenbrake drum
assembly from wheel motor.
6. Remove lock nut and brake drum assembly. Locate
and retrieve woodruff key (item 21).
7. Remove retaining clip (item 10) from the brak e cam
(item 9) and brake lever (item 23). Separate lever from
cam.
8. Remove return springs (item 11) from brake shoes
(item 12). Remove brake shoes from backing plate.
9. Ifneeded,removebrakecam(item9)fromtheback-
ing plate.
10.If necessary, remove four (4) cap screws (item 26),
lock nuts (item 13) and backing plate (item 8) from the
brake bracket (item 14).
11.Partsshouldbecleanandfreeofrust. Inspectbrake
shoes (item 12) and brake drum (item 5) contact sur-
faces for excessive wear. Replace any worn or dam-
aged parts.
12.If wheel hub (item 6), brake drum (item 5) or drive
studs (item 7) need replacement, press four (4) drive
studs from wheel hub and separate hub from brake
drum.
Installation (Figs. 2 and 3)
1. If wheel hub was separated from brake drum, posi-
tion hub to drum and secure by pressing four (4) drive
studsthroughhub.Makesurethatstudsarepressedful-
ly into hub.
2. If backing plate (item 8) was removed, secure back-
ing plate to the brake bracket (item 14) with four (4) cap
screws (item 26) and lock nuts (item 13).
3. Insert brake cam (item 9) into the backing plate if it
was removed.
4. Position both brake shoes (item 12) on the backing
plate. Insert return springs (item 11) into the holes of
both brake shoes.
5. Applyantiseizelubricanttosplineareaofbrakecam.
Slide brake lever (item 23) onto brake cam and secure
with retaining c lip (10). Make sure thatbrake lever pivot
is inserted into machine frame during assembly.
6. Make sure that wheel hub bore and wheel motor
shaft are thoroughly cleaned. Install woodruff key (item
21)tothewheelmotors haft.Slidebrakedrumassembly
over shaft and key.
7. Securebrakedrumassemblytomotorshaftwithlock
nut (item 24).
8. Install front wheel and secure with four (4) lug nuts.
Tighten lug nuts evenly in a crossing pattern.
Failure to maintain proper wheel lug nut and
wheel hub lock nut torque could result in failure
orlossof wheelandmay resultinpersonal injury.
WARNING
9. Lower machine to ground. Torque lock nut from 250
to 400 ft--lb (339 to 540 N--m) and wheel lug nuts from
70 to 90 ft--lb (95 to 122 N--m).
10.Check and adjust brakes.
1. Return spring
2. Brake shoe
3. Brake cam
Figure 3
2
1
3
2
1
Chassis
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