CM Shopstar, Operating, Maintenance & Parts Manual

15

P/N 192047138 Rev AA November 2017

The Protector™ is to be used with “Century Lubricants HB-11, 

#3” grease. Do not use any other grease or the Protector will not 

operate properly and parts could be damaged.

The gears and Protector are packed at assembly with grease and 

should not need to be renewed unless the gears have been removed 

from the housing and degreased.

Never degrease the Protector™ or attempt to disassemble this 

device. Degreasing the Protector may damage parts and using a 

device that has been degreased may cause erratic, inconsistent 

operation. If the Protector has been degreased, it must be 

replaced by a factory calibrated device.

Assembly-

Brake Driver

Inc ludes Coil

Brake Spring

Brake Armature

Brake Base Plate

Brake Disc

Brake Field

First Pinion

Shaft

Brake Assembly

Gap

Figure 14: Brake Field Assembly

Figure 15: Drive Shaft Assembly 

If the gears are removed from the housing, wipe the excess grease 

off the outside surfaces of the Protector with a soft cloth and 

degrease the remaining gears and housings. Upon reassembly, 

add 2 oz. of the above grease to gears and housing. Also, coat the 

spline on the end of the first pinion and shaft with a Molydisulphide 

lubricant such as Moly-Duolube 67 (Hercules Packing Co.)

BEARINGS

Rotor bearings are pre-lubricated and require no lubrication. Needle 

bearings) are packed at assembly with grease and should not need 

to be relubricated. However, if the housings, liftwheel or sheave 

wheel have been degreased, these bearings should be greased 

using “Century Lubricants HB-11, #3” grease.

SEALS

When reassembling the unit, wipe the inside surface of the seals 

with “Century Lubricants HB-11, #3” grease.

HOOK BLOCK

If the hook blocks are disassembled for inspection purposes, wipe 

the grease from the hook knob and the hook knob cavities in the 

hook blocks. At reassembly, coat the underside of the hook knob 

and the knob bearing surfaces of cavities in the hook blocks with 

Molykote BR-2-S (Dow Corning Corp.) grease or equivalent.

CHAIN GUIDE, LIFTWHEEL AND SHEAVE WHEEL

When the hoist is disassembled for inspection and/or repair, the 

chain guide, stripper, sheave wheel (on double chain unit) and 

liftwheel must be lubricated with Lubriplate® Bar and Chain Oil 

10-R (Fiske Bros. Refining Co.) prior to reassembly. The lubricant 

must be applied in sufficient quantity to obtain natural runoff and full 

coverage of these parts.

LOAD CHAIN

Refer to page 13 for lubrication of the load chain.

EXTERIOR FINISH

The exterior surface of the hoist has a durable, scratch resistant 

baked powder coating. Normally, the exterior surfaces can be 

cleaned by wiping with a cloth. However, if the finish is damaged, 

compatible touch-up paint can be purchased from the factory. Refer 

to page 19 for information on ordering the paint.

ELECTRIC BRAKE

The brake is non-adjustable with a nominal .004 inch (0.102 mm) air 

gap and the brake disc must be replaced when the air gap reaches 

.012 inch (0.305 mm). The brake spacer should be no more than 

.012 inch (0.305 mm) thicker than the combined thickness of the 

brake disc and armature plate. Refer to Figure 16.

Figure 16: Brake Assembly

Failure to follow proper lockout/tagout procedures may present the 

danger of electrical shock.

TO AVOID INJURY:

Disconnect power and lockout/tagout disconnecting means before 

removing cover or servicing this equipment.

To inspect the brake gap, disconnect the hoist from power and 

remove brake end cover.

1.  Refer to Figure 16 and disassemble the brake. Depress and 

hold the field assembly while removing the four brake screws. 

The field assembly is under spring pressure and will spring-out 

if not held.  Examine the base plate, brake disc) and armature 

for excessive wear, scoring or warpage. Make sure the brake 

disc is not glazed, the coil firmly fixed in the field) and the 

brake spring is not damaged. Worn, scored, warped, glazed or 

damaged parts should be replaced before preceding.

2.  Refer to Figure 16 and assemble the brake. Depress and hold 

the field assembly while installing the four brake screws through 

the brake parts and mount the brake on the gear housing. 

Tighten the four brake screws to 25 in.lb.

PROTECTOR™

The Protector should operate for the normal life of the hoist without 

service. The device has been lubricated and calibrated and it should 

not be adjusted. If the Protector is not operating properly (see 

testing on page

13), it must be replaced with a properly calibrated 

unit from the factory.

PREVENTATIVE MAINTENANCE

A preventative maintenance program should be established to 

prolong the useful life of the hoist and maintain its reliability and 

continued safe use. The program should include the periodic and 

frequent inspections with particular attention being paid to the 

lubrication schedule on page 12.