Hitachi Zaxis 200LC Operator's Manual page 128

Track Hardware Inspection And Replacement
IMPORTANT: Operating a machine with loose shoes
can cause the cap screws and holes in
the shoes and links to wear making it
difficult to keep the shoes tight. Loose
shoes can also cause hardware failure
and loss of shoes
For shoes with missing or loose cap screws and nuts,
remove shoes and clean the mating surface of shoes and
links before replacing cap screws and nuts. The cap
screws must be replaced because they have been
stretched to yield previously.
1. Clean the mating surface of shoe and links. Install
shoes.
2. Apply a light coating of oil to cap screw threads before
installing.
3. Install nuts with the rounded corners against milled
surface of link and chamfered side is away from link.
Check that nuts are square with the milled surface of
link and there is full contact between nut and milled
surface. As necessary, hold the nut so it does not turn.
4. Starting at any cap screw, tighten all cap screws in
sequence shown to the torque specification.
Zaxis 200, 250 Standard—Specification
20 mm Track Shoe Cap
Screws— Installation—Torque .......................
Zaxis 250 High Drawbar, 350 Standard—Specification
20 mm Track Shoe Cap
Screws— Installation—Torque ................
Zaxis 350 High Drawbar—Specification
20 mm Track Shoe Cap
Screws— Installation—Torque ....................
Maintenance—After First 50 Hours
298 N.m (220 lb-ft) Plus An
Additional 1/2 turn
1079 ± 108 N.m (796 ± 80 lb-ft)
1376 ± 136 N.m (1015 ± 100
lb-ft)
3-6-2
OUT4001,0000275 –19–13APR07–2/2
081407
PN=124