Milwaukee 9562, 9572, 9573, 9571, 9568, 9570 B F G E, Brake Adjustment, Load Chain, Gearing, Bearings

Milwaukee Electric Tool Corporation

13135 West Lisbon Road

Brookfield, Wisconsin 53005

TEL: (800) 729-3878

3.Carefully raise load block to upper limit and observe if it stops automatically at desired level. Do not allow load block to run into hoist housing — this will damage the hoist. Maintain a minimum clearance of 2" from the hoist housing and the top of the load block on single-chained models and 1" from the chain support to the top of the load block on double-chained models.

4.Carefully lower load block to lower limit and observe if it stops automatically at the desired level. Do not allow slack- end loop of chain to become taut against hoist housing. This will damage the hoist. There should be a minimum clearance of 1½" between the chain stop and the bottom of the hoist.

5.If upper and lower limits operate satisfactorily, hoist is ready for use. If they are not as desired, repeat adjustment.

BRAKE

Properly adjusted, this brake will release promptly when energized. It is capable of both smoothly stopping and securely holding the rated capacity of the hoist. If the hoist develops either undesirable over-travel after the pushbutton is released (this condition is most noticeable in the lowering direction) or hesitates to lift the load promptly when the pushbutton is depressed (this condition is most noticeable in the hoisting direction), the brake should be adjusted.

Brake Adjustment

Refer to Figure 6.

1.DISCONNECT HOIST FROM POWER SUPPLY and remove the electrical cover.

B F

G

E

Gap

A

X	X
D	C

H

Figure 6 — Brake Assembly

2.With reference to Figure 6, the gap between the brake armature “A” and the field “B” should be checked. The correct gap is 0.015". Adjustment should not be necessary until gap reaches 0.040".

3.Adjust gap by adjusting the 3 locknuts “F” and checking with a feeler gauge to be sure gap is the same on both ends of the solenoid.

4.Adjustment is now complete and the brake properly set. Replace the electrical cover, reconnect the power supply, and check hoist brake action.

Be sure the bottom of the armature does not bear against the splined adapter “H”. As adjustments are made, the built-in clearance will be reduced. When this clearance is gone REPLACE BRAKE DISCS. Minimum allowable disc thickness is .162". See Figure 15 for further illustration.

HOIST CONTROLS

Both the pushbutton and the reversing contactor are mechanically interlocked to prevent shorting the circuit and causing serious damage. As part of maintenance, always check for proper closure of contact points as well as for burned contacts. If replacement is necessary, see Figures 16 & 18 for replacement parts.

WIRING

Refer to Figures 9A and 9B

MILWAUKEE Electric Chain Hoists, which are available for 115/230V or 230/460V, are shipped wired for 115V and 460V respectively. Conversion of dual voltage hoists to either the higher or lower voltage can be done simply and quickly as follows:

1.DISCONNECT HOIST FROM POWER SUPPLY and remove the electrical cover.

2.Each dual-voltage hoist has a terminal block assembly for the interconnection of the electrical components of the hoist. To convert voltage, reconnect the leads to the terminal blocks according to the wiring diagram located inside the electrical cover and also in Figures 9A & 9B. DO NOT move any wires or make any changes to the electrical circuit except at the terminal block assembly. Tug on wires to ensure they are securely connected.

3.After converting voltage, recheck phasing and limit switch operation (See INSTALLATION 2-c & 4, page 5).

IMPORTANT: Always refer to the wiring diagram located on the inside of the electrical cover or Figures 9A and 9B when performing electrical repairs. Make sure all connections are secure and check for damaged insulation. It is also imperative that the power circuit has conductors of adequate size (See Table 3).

LUBRICATION

Refer to Figure 11.

Proper lubrication is necessary for a long and relatively trouble- free hoist operation. Refer to the following and the RECOMMENDED LUBRICATION SCHEDULE for lubrication points, type of lubricant, and frequency of lubrication.

Load Chain

Clean the load chain with acid-free solvent and coat with SAE 90 gear oil. Wipe excess oil to prevent dripping. Never apply grease to the chain.

Gearing

The gear case of this hoist is filled at assembly with approximately 1½ pints of SAE 90 EP gear oil. Check oil level by removing the oil level check plug from the side of the hoist. With the hoist hanging level, gear oil should be even with the hole. Change oil periodically depending on the severity of the application and the environmental conditions (at least every 200 hours of run time).

Bearings

All bearings except hook and idler sheave bearings are lubricated at the factory and should not require additional lubrication. Noisy or worn bearings should be replaced.

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