Ingersoll-Rand MMP150, Инструкция по эксплуатации, техническому обслуживанию и ремонту

Страница: 14 / 36

14 MHD56208 - Edition 3
6. When grasping a part in a vise, always use leather-covered or
copper-covered vise jaws to protect surface of part and help
prevent distortion. This is particularly true of threaded
members, machined surfaces and housings.
7. Do not remove any part which is a press fit in or on a
subassembly unless removal of that part is necessary for
repairs or replacement.
8. When removing ball bearings from shafts, it is best to use a
bearing puller. When removing bearings from housings, drive
out bearing with a sleeve slightly smaller than the outside
bearing diameter. The end of the sleeve or pipe which
contacts the bearing must be square. Protect bearings from
dirt by keeping them wrapped in clean cloths.
Motor Removal
Refer to Dwg. MHP2005 on page 20.
1.
Relieve pressure in air lines and motor air components by
operating motor control several times after air supply has
been shut off.
• Shut off, bleed down and disconnect air supply line before
performing any disassembly procedures.
2. Disconnect and tag air lines.
3. Use lifting eyebolt installed in motor housing to lift motor.
• The air motor weighs approximately 134 lbs (61 kg).
Adequately support air motor before removing motor
mounting capscrews.
4. Remove four capscrews (33) and washers (32) securing
motor assembly to component. Using a hoist to support
motor, pull motor straight away.
• Motor eyebolt is ONLY for lifting motor. Do NOT use to lift
motor and attached components.
Control Valve Removal
Refer to Dwg. MHP2036 on page 24.
1.
Turn off air supply to valve and disconnect main air supply
line at motor.
2. Disconnect auxiliary air line(s) from fitting(s) located on
control valve.
3. Remove muffler and/or exhaust piping.
4. Remove capscrews (951) and washers (949) and lift off
control valve assemb
ly
5. Remove and discard gaskets (946).
Control Valve Disassembly
Refer to Dwg. MHP2036 on page 24.
Handle Removal
It is not recommended to disassemble handle.
1.
Carefully pry off plug (935).
2. Remove capscrew (901) and tablock washer (909).
• Observe spring (937) connection during disassembly. This
spring is under tension and is required to return handle to
neutral position.
3. Carefully pull handle assembly (930) from reverse valve
(943). Remove spring (937).
Reverse Valve Removal
1. Remove capscrews (938), (925) and washers (924) from seal
bracket (939). Remove seal bracket from housing. Remove
and discard ‘O’ rings (941) and (942).
2. Remove capscrews (901) and washers (902) from exhaust
flange (955). Remove flange from housing. Remove and
discard ‘O’ ring (942).
3. Move reverse valve (943) out exhaust flange side of housing
until ball (916) is visible on reverse valve. Allow ball (916)
to drop out of bushing (944) and remove ball (916).
4. Remove bushing (944) out exhaust flange side of housing.
• Dowel pin (945) allows the bushing to be removed only from
the exhaust flange side of housing. Ball (916) retains reverse
valve (943) in bushing (944).
• Do not remove reverse valve (943), bushing (944) and ball
(916) at the same time, damage may occur to bushing.
• Take care to not allow ball (916) to drop in motor. If this
occurs it may be necessary to disassemble motor to retrieve
ball (916).
Piston Removal
1. Remove capscrews (901) and washers (902) from piston
cover (919). Remove cover and discard gasket (918).
2. Remove capscrews (901) and washers (902) from poppet
cover (903). Remove cover and discard gasket (904).
3. Remove the following items from housing poppet bore:
spring (905), poppet cap (906) and poppet seal (907).
4. From poppet side, push piston (922) out of housing. Remove
‘O’ rings (921) and (923) and discard.
Pilot Valve Removal
• For easier removal it is recommended to use IR pilot valve
tool (920). This must be purchased separately.
If pilot valve is not damaged it is not necessary to disassemble
completely.
1.
Remove plug (912).
2. Remove pilot valve assembly (910) as an assembly.
3. Discard and replace pilot valve assembly (910) if necessary.
Motor Disassembly
Refer to Dwg. MHP2005 on page 20.