5-4 HAND PUMP SYSTEM
Disassembling/reassembling the hand pump:
＊
In this Section, for the case where index
numbers in drawings are different for
MVH-120/150 and MVH-R60,
drawings
for
MVH-120/150 will be shown in { }.
1. Removing the hand pump:
1-1 Disconnect hydraulic hose off the compactor
cylinder.
1-2 Remove hydraulic hose clamp at the bottom of
handle.
1-3 Remove hand pump assembly from the
handle.
1-4 Remove hydraulic hose from the hand pump
assembly.
2. Disassembling the hand pump:
2-1 With breather cap (33,{22}) taken off, remove
the breather (21).
2-2 Remove cover (2) from top of the pump
(Remove four hex socket head bolts (21, {20}).
2-3 With blank plug (23, {17})removed, take off
the stopper (22, {16}).
2-4 With spring retainer (18) or hose joint ({19})
removed, take off the spring (16, 17,{14}).
2-5 With spring pin (6x25) (20,{13}) removed, take
off control shaft (8,{7}) and cam (A).
2-6 Remove bush (9,{8}).
2-7 With stop plug (19,{18}) removed from the
bottom of pump body (1), take off the piston (4)
from the pump body (1).
2-8 In case of MVH-R60, piston spring (14) and
cylinder (3) can also be removed from
accumulator case (15).
3. Clean the parts carefully:
(It is recommended to clean all the parts with
paraffin in use.)
3-1 Clean the valve carefully which is contained
inside the piston (4) .
3-2 Clean the breather (21) thoroughly.
3-3 Clean the casing internals, being careful not
to allow any dust to enter.
19
Summary of Contents for Mikasa MVH120
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