Service, Torque chart, Parts replacement cycles and tolerances – MBW MK8 120 User Manual
Page 12: Ervice
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S
ERVICE
Assembly and disassembly should be performed by a
service technician who has been factory trained on MBW
equipment. The unit should be clean and free of debris.
Pressure washing before disassembly is recommended.
• Prior to assembly, wash all parts in a suitable cleaner or
solvent.
• Check moving parts for wear and failure. Refer to the
Replacement section in this manual for tolerance and
replacement cycles.
• All shafts and housings should be oiled prior to pressing
bearings. Also, ensure that the bearings are pressed
square and are seated properly.
• All bearings should be replaced when rebuilding any
exciter or gearbox.
• All gaskets and seals should be replaced after any
disassembly.
Torque Chart
Parts Replacement Cycles and Tolerances
SIZE
GRADE 2
GRADE 5
GRADE 8
1/4-20
49 in
•
lbs
76 in
•
lbs
9 ft
•
lbs
1/4-28
56 in
•
lbs
87 in
•
lbs
10 ft
•
lbs
5/16-18
8 ft
•
lbs
13 ft
•
lbs
18 ft
•
lbs
5/16-24
9 ft
•
lbs
14 ft
•
lbs
20 ft
•
lbs
3/8-16
15 ft
•
lbs
23 ft
•
lbs
33 ft
•
lbs
3/8-24
17 ft
•
lbs
26 ft
•
lbs
37 ft
•
lbs
7/16-14
24 ft
•
lbs
37 ft
•
lbs
52 ft
•
lbs
7/16-20
27 ft
•
lbs
41 ft
•
lbs
58 ft
•
lbs
1/2-13
37 ft
•
lbs
57 ft
•
lbs
80 ft
•
lbs
1/2-20
41 ft
•
lbs
64 ft
•
lbs
90 ft
•
lbs
9/16-12
53 ft
•
lbs
82 ft
•
lbs
115 ft
•
lbs
5/8-11
73 ft
•
lbs
112 ft
•
lbs
159 ft
•
lbs
5/8-18
83 ft
•
lbs
112 ft
•
lbs
180 ft
•
lbs
3/4-16
144 ft
•
lbs
200 ft
•
lbs
315 ft
•
lbs
1-8
188 ft
•
lbs
483 ft
•
lbs
682 ft
•
lbs
1-14
210 ft
•
lbs
541 ft
•
lbs
764 ft
•
lbs
1-1/2-6
652 ft
•
lbs
1462 ft
•
lbs
2371 ft
•
lbs
M 6
3 ft
•
lbs
4 ft
•
lbs
7 ft
•
lbs
M 8
6 ft
•
lbs
10 ft
•
lbs
18 ft
•
lbs
M 10
10 ft
•
lbs
20 ft
•
lbs
30 ft
•
lbs
CONVERSIONS
in
•
lbs x 0.083 = ft
•
lbs
ft
•
lbs x 12 = in
•
lbs
ft
•
lbs x 0.1383 = kg
•
m
ft
•
lbs x 1.3558 = N
•
m
Bearings
Replace anytime a bearing is rough, binding, discolored or removed from housing or
shaft.
Engine Components
Refer to your engine manufacturer’s Owner’s Manual.
Hardware
Replace any worn or damaged hardware as needed. Replacement hardware should
be grade 5 and zinc plated unless otherwise specified.
Safety Decals
Replace if they become damaged or illegible.
Seals & Gaskets
Replace if a leak is detected and at every overhaul or teardown.
V-Belts
Replace if cracked, torn, or stretched to the point the belt won’t tension properly.