GROVE 11-49
CD3340B/YB4411 STRUCTURAL
11
Published 04/07/2015 Control # 569-00
9. Install the motor support capscrews and tighten evenly
to recommended torque.
Brake Cylinder Pressure Test
1. Install the -4 J.I.C fitting in the brake release port.
Connect a hand pump with a 0 - 13 800 kPa (0 - 2000
psi) pressure gauge and shutoff valve to this fitting
(Figure 11-122).
2. WHILE PRESSURE IS APPLIED AND THE BRAKE
RELEASED, install the brake clutch assembly in the
brake pack, short end of the inner race toward the motor.
Turn the clutch back and forth as you align the outer race
splines with the brake disc splines.
3. Release the pressure on the cylinder, and then remove
the brake clutch assembly. The brake cylinder assembly
is now complete and ready to install in the hoist
Brake Clutch Service
Disassembly
1. Remove the snap ring and sprag bushing retainer from
one end only (Figure 11-123).
2. Pull the inner race out (Figure 11-124). Examine the
race for scoring, wear, or indentations caused by the
sprag cams.
3. Use a screwdriver and mallet to remove the sprag
bushing from one end of the outer race (Figure 11-125).
There are four cutouts in the bushing for this purpose.
Be careful not to damage the bushing inside surface. If
the bushing’s inside surface is damaged, or shows wear,
replace it.
Reference Only
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