Maintenance Section
-176-
Hydraulic Return Filter - Change
See topic “Hydraulic Return Filter - Change” in “First 250
Service Hours or a Month”.
Air Breather - Change
Park the lift trucks level, with the forks lowered, parking
brake engaged, transmission in NEUTRAL and the
engine stopped.
1. Raise the hood and seat assembly.
2. Remove and discard the air breather.
3. Install a new air breather.
4. Lower the hood and seat assembly.
Transmission Oil, Oil Filter & Strainer
- Clean, Change
See topic, “Transmission Oil, Oil Filter & Strainer - Clean,
Change” in “First 50 - 100 Service Hours or a Week”.
Lift Chains - Test, Check, Adjust
Lift Chain Wear Test
Inspect the part of the chain that is normally operated
over the cross head roller. When the chain bends over
the roller, the movement of the parts against each other
causes wears.
Inspect to be sure that chain link pins do not extend
outside of the link hole. If any single link pin is extended
beyond its connecting corresponding link, it should be
suspected of being broken inside of its link hole. Lift
chains are required to check for wear about every 1,000
service hours or 6 months.
Chain wear test is a measurement of wear of the chain
links and pins. Take the following steps to check chain
wear.
1. Lift the mast and carriage enough for getting tension
on lift chains.
Typical example
2. Measure precisely ten links of chain distance at the
center of pins in millimeter.
3. Calculate chain wear rate*.
4. If the chain wear rate is 2% or more, replace the lift
chain.
*Chain wear rate (%)
=
Actual measurement - Pitch** X 10 X 100
Pitch** X 10
**Chain Pitch for D35/40/45S-5, D40/45/50SC-5, D50C-
5, G35/40/45S-5, G40/45/50SC-5 = 25.40 mm(1.0 in)
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