FORM NO. 56043071 CMAX
™
28/34ST / I-MAX
™
28/32C, BA 750/850ST, BA 750C -
49
WHEEL DRIVE SYSTEM
K
L
Chain Adjustment
1
Loosen the (3) Motor Mount Bolts
(A)
and the adjustment Lock Nut
(B)
to adjust chain tension.
2
Turn the adjustment Bolt
(C)
in (CW) to obtain a 1/2" (13mm) chain deflection between the sprockets when moderate pressure is applied
to the chain.
3
Retighten the adjustment bolt lock nut, the (3) motor mount bolts and test the drive system for proper operation.
OPTIONAL PARKING BRAKE OPERATION
1
See Figure 5. To set the parking brake press the center of the brake assembly handle and at the same time grip the outside knob then pull
backwards and release.
2
Next turn the knob CCW to tighten the cable for a firm brake caliper to rotor engagement.
3
To release the parking brake, press the end of the handle and push in.
OPTIONAL BRAKE - ASSEMBLY REMOVAL
WARNING!
Disconnect the battery pack before servicing the machine.
1
Remove the left side chassis panel to access the parking brake components.
2
Remove the bolt and nut that secure the brake cable at the brake caliper arm.
3
Separate the drive chain by removing the master link.
4
See Figure 4. Rotate the brake rotor/sprocket assembly
(E)
to a working position to access the (2) 1/4-20 set screws. Loosen both the Set
Screws
(D)
using a 1/8" Hex socket then pull the caliper and rotor assembly off the end of the drive motor shaft.
5
Follow the above steps in reverse order to reassemble. Note: Make sure the drive brake rotor/drive sprocket and drive wheel sprocket are
in alignment to prevent binding and excessive wear.
FIGURE 5
Brake Rotor
Drive Motor
Sprocket
Drive Wheel
Sprocket
Chain
Front Drive
Wheel
FRONT
OPTIONAL BRAKE - CALIPER ADJUSTMENT
FIGURE 6
FIGURE 7
1
See Figure 7. Loosen the large outer Nut
(K)
, then
turn the inner caliper adjustment Screw
(L)
in to
compensate for pad wear. Note: Do not over adjust
to the point that the pad drags excessively against the
brake rotor. After making the adjustment test the
parking brake for proper operation both set and
released.
CHAIN REMOVAL AND CHAIN ADJUSTMENT (CONTINUED)