OPERATING THE MACHINE
5-26
Releasing Overload Relief Valve
• If the front attachment is not loaded
d
WARNING: Loosen overload relief valve slowly. If it is
loosened rapidly, the boom may also lower rapidly. Do
not loosen it more than 3/4 turns, as the hydraulic oil
may spout.
1. Loosen the overload relief valve slowly by checking the
movement of boom.
2. After checking that the boom is completely lowered,
tighten the overload relief valve.
Model
Tightening Torque
ZX33U-5A, 38U-5A
70 to 80 N∙m (7 to 8 kgf∙m, 52 to
59 lbf·ft)
ZX48U-5A, 55U-5A
60 to 64 N∙m (6 to 6.4 kgf∙m, 44
to 47 lbf∙ft)
ZX65USB-5A
60 to 70 N∙m (6 to 7 kgf∙m, 44 to
52 lbf·ft)
• If the front attachment is loaded
1. Put the matching marks on lock nut in overload relief
valve and adjusting screw in the boom raise circuit
(cylinder bottom side).
d
WARNING: Loosen the adjusting screw slowly. If it is
loosened rapidly, the boom may also lower rapidly.
2. Loosen the lock nut. Loosen adjusting screw slowly by
checking the movement of boom.
3. After checking that the boom is completely lowered,
align the matching marks and tighten the lock nut.
Torque:
28 to 32 N∙m
(2.8 to 3.2 kgf∙m, 20 to 23 lbf∙ft)
T152-03-03-015
T566-03-03-018
Lock Nut
Adjusting screw
Lock Nut
Adjusting screw
Valve Body
Overload Relief Valve in
Boom Raise Circuit
Fig. 1
ZX33U-5A/38U-5A
MADB-05-006
ZX48U-5A/55U-5A
Overload Relief Valve in Boom
Raise Circuit
Overload Relief Valve in Boom
Raise Circuit
ZX65USB-5A
T1M9-03-04-001
M1M0-05-012
Содержание Zaxis 33U-5A
Страница 4: ......
Страница 10: ...MACHINE NUMBERS 2 Engine TYPE MFG NO Travel Motor TYPE MFG NO MADB 00 020 MADC 00 010 M1M0 00 004 ...
Страница 11: ...MACHINE NUMBERS 3 Swing Motor TYPE MFG NO ZX65USB 5A ZX33U 5A 38U 5A 48U 5A 55U 5A MADB 00 005 MADC 00 001 ...
Страница 57: ...SAFETY SIGNS S 45 SS4604981 MADG 00 007 ZX33U 5A 38U 5A ZX65USB 5A ZX48U 5A 55U 5A MADB 00 010 MADC 00 012 ...
Страница 66: ...SAFETY SIGNS S 54 MEMO ...
Страница 104: ...OPERATOR S STATION 1 38 Radio Cab equipped machine Optional 1 Radio Clock 1 MADB 01 005 ...
Страница 114: ...BREAK IN 2 2 MEMO ...
Страница 160: ...OPERATING THE MACHINE 5 28 MEMO ...
Страница 270: ...MAINTENANCE 7 102 MEMO ...
Страница 272: ...MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS 9 2 MEMO ...
Страница 274: ...STORAGE 10 2 MEMO ...