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Reelmaster 3550−D Page 6 − 7 Chassis
Removal (Fig. 5)
1. Park machine on a level surface, lower cutting units,
stop engine, engage parking brake and remove key
from the ignition switch.
WARNING
Before jacking up the machine, review and follow
Jacking Instructions in Chapter 1 − Safety.
2. Jack up front wheel and use jack stands or blocking
to keep the front tire off the floor.
3. Remove lug nuts from drive studs. Pull wheel from
drive studs and wheel hub.
NOTE: The installation torque of the lock nut is from
250 to 350 ft−lb (339 to 474 N−m). Use impact wrench
to remove lock nut from the hydraulic motor shaft.
4. Remove lock nut from the hydraulic motor shaft. Re-
lease parking brake.
IMPORTANT: Do not hit wheel hub or puller with a
hammer during removal or installation. Hammering
may cause damage to the hydraulic wheel motor.
5. Use wheel hub puller to remove wheel hub and brake
drum from the hydraulic motor shaft (see Special Tools
in this chapter). Remove woodruff key from the shaft.
6. Remove cotter pin that retains adjustment rod to
brake lever. Separate adjustment rod from brake lever.
NOTE: The brake lever, backing plate, retainer clip, re-
turn springs, brake shoes and cam shaft can be re-
moved as a complete brake assembly.
7. Remove the brake assembly from the brake bracket,
remove four cap screws and lock nuts securing the as-
sembly to the bracket.
8. Disassemble brake assembly as follows (Fig. 6):
A. Remove return springs from the brake shoes. Re-
move brake shoes from the backing plate.
B. Matchmark brake cam and brake lever to assure
proper alignment during assembly. Remove E−ring
from the brake cam. Pull brake lever from the cam.
Remove cam from backing plate.
9. Remove lock nuts, spacers and socket head screws
securing the brake bracket and hydraulic motor to the
frame if necessary.
Installation (Fig. 5)
1. If removed, insert four socket head screws through
the frame, hydraulic motor, spacers, and brake bracket.
Secure with lock nuts, but do not fully tighten.
2. Assemble brake assembly as follows (Fig. 6):
A. If removed, secure backing plate to the brake
bracket with four cap screws and lock washers.
B. Apply antiseize lubricant to cam shaft splines. In-
sert cam shaft through the backing plate.
C. Attach brake lever to the cam shaft. Make sure
matchmarks are aligned properly. Secure lever to
shaft with E−ring.
D. Lubricate brake shoe pivot points with a light
coating of grease. Position both brake shoes on the
backing plate so that the concave heels attach to the
anchor pin.
E. Insert both return springs into the holes of both
brake shoes. Make sure shoes fit snuggly against
the anchor pin and cam shaft.
3. If the complete brake assembly was removed, se-
cure brake assembly to the brake bracket with four cap
screws and lock nuts. Tighten fasteners.
4. Attach adjustment rod to the brake lever and secure
with cotter pin.
5. Make sure that wheel hub and hydraulic motor shafts
are thoroughly clean. Install key to the slot on the hy-
draulic motor shaft. Slide wheel hub and brake drum as-
sembly onto the shaft.
6. Secure wheel hub and brake drum to the hydraulic
motor shaft with lock nut.
NOTE: For proper brake operation, the brake shoes
and backing plate must be concentrically aligned with
the brake drum.
7. To align brake shoes and drum, apply parking brake.
Then tighten four socket head screws (item 3) and lock
nuts that secure the brake bracket and wheel motor to
the frame.
Failure to maintain proper wheel lug nut and
wheel hub lock nut torque could result in failure
or loss of wheel and may result in personal injury
.
WARNING
8. Secure wheel to machine with four (4) lug nuts.
Chassis