Hitachi ZAXIS 250LC-7 Operator's Manual page 50

Connecting Lubrication Hose and Lubricate
1. Install lubrication hoses between the boom and arm.
Boom lubrication At the end of the boom cylinder (a)
hose: (2 positions on left and right side)
Arm lubrication hose: At the bottom of the arm cylinder (b)
Arm lubrication: At the top of the arm cylinder (c)
Tightening Torque:
Model Type
HE15LD
ZX250LC(N)-7
HE18LD
HE15LD
ZX300LC(N)-7
HE18LD
HE15LD
HE18LD
ZX350LC(N)-7
HE20LD
HE22
2. Apply grease on the connecting pins.
Before lubricating the boom foot pin and boom cylinder
pin, slightly jack up the main body.
3. Operate the boom and arm several times to spread
grease.
Failure to do so may cause seizure and generate
abnormal noise.
DISASSEMBLING • ASSEMBLING
Tightening Torque
29.5 N·m (3.0 kgf·m)
4-16
a
b
M1T1-SL1-006
MDCAEU-SL1-001