MBW SP125, Operator'S Safety And Service Manual

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SERVICE
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
Service Tools
Handle Disassembly
Refer to Handle Assembly, page 12.
1. Remove three screws (#18) securing handle and
remove, taking care to not lose spring (#10).
2. Remove two screws (#15) holding bottom cover (#5)
and remove cover.
3. Using a wrench across flats on valve spool (#4),
loosen and remove screw securing trigger (#8).
4. Use a pick or small screwdriver, remove shaft wiper
(#2).
5. Remove snap ring (#15).
6. Using a wrench across the flats on valve spool (# 4),
remove screw securing lower spool (#7).
7. Pull spool (#4) our the top of the body. Guide (#6) will
come out with spool.
8. Push lower valve spool (#7) out the bottom of the
valve body (#9).
9. Insert a long standard bladed screwdriver through the
inlet of the valve body to unscrew the gage (#11).
Handle Assembly
Refer to Handle Assembly, page 12.
Note: All o-rings and seals should be replaced after any
disassembly.
1. Thread gage (#11) into body (#9) using a long
standard blade screwdriver and thread sealing
compound.
2. Place o-rings (#12, 14) into grooves on valve spool
(#4). Coat o-rings with grease and insert spool (#4)
into body (#9).
3. Place o-ring (#14) into groove on lower valve spool
(#7), coat o-ring with grease, and insert into bottom of
body. Secure to valve spool (#14) with screw (#17).
Use wrench across flats on valve spool to tighten
screw.
4. Place o-ring in groove on upper guide (#6), coat with
grease, and insert into main body over the valve
spool.
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
Part No. Description
20563 VALVE GREASE, SILICONE,.21 oz
20565 REBUILD KIT, SOIL PICK