Mitsubishi 6M60-TL, Service Manual

Page: 286 / 330

54
54-17
CAUTION
• When the armature is removed, the ball may come out with it. Take care not to lose the ball.
• Do not remove the bearings and unless defects are evident.
• The rubber packing is serviceable if any defect is not found in it during disassembly.
• It is not necessary to remove the pinion when only the motor section needs to be disassembled for inspection, like
when inspecting brushes and related parts.
• Be sure to remove the pinion before disassembling any other parts.
Assembly sequence
Follow the disassembly sequence in reverse.
CAUTION
• Whenever the magnetic switch is replaced, the pinion gap must be adjusted.
Service standards (Unit: mm)
Lubricant and/or sealant
Special tools
Location Maintenance item Standard value Limit Remedy
– Pinion gap 0.5 to 2.0 – Adjust
–
No-load
characteristics
With 23V applied
Current 85 A or less –
Inspect
Rotation speed 3300 rpm or higher –
9 Brush spring pressure 29.2 to 39.4 N {3 to 4 kgf}
13.7 N
{1.4 kgf}
Replace
10, 12 Brush length 18 11 Replace
17
Commutator outside diameter 32 31.4
Replace
Runout of commutator periphery –
0.1 or
higher
Mold depth between segments – 0.2 or less
Correct or
replace
Mark Points of application Specified lubricant and/or sealant Quantity
Lever contact surface of magnetic switch
Multipurpose grease
[NLGI No. 2 (Li soap)]
As required
Sliding surfaces of gear shaft and overrunning
clutch
Sliding surfaces of lever and overrunning clutch
Sliding surfaces of armature and gear shaft
Molykote AG650 As required
Ball
Teeth of planetary gear and internal gear
Washer
Oil seal
Multipurpose grease
[NLGI No. 2 (Li soap)]
or grease attached to oil seal
As required
Splines of overrunning clutch
Multemp OA-171
(Kyodo Yushi Co., Ltd.)
As required
Mark Tool name and shape Part No. Application
Bearing puller and
installer
A: Bearing puller and
installer
B: Bearing installer
MH063597
A: MH063615
B: MH063629
Removal and installation of front
bearing