MAINTENANCE
CHECKS
t Controlled converters only.
tt Non-controlled converters only.
• Both type converters.
Dally
Check oil levels (refer to Lubrication Guide for oil capac-
ities; refer to Bulletin 152 for approved oils):
t Converter oil tank dipstick
at operating tempera-
ture.
• Output housing dipstick.
tt Input housing dipstick or grease fitting (if
equipped).
NOTE The input bearing for past production non-
controlled converters is greased. The input bear-
ing for present production non-controlled con-
verters operates in oil, and a dipstick is provided.
• Check system for leaks (tighten loose connections or
replace faulty parts as necessary).
tt Check engine clutch adjustment (refer to instruction
plate on converter housing).
Weekly
tt Clean converter orifice filters.
tt Clean charge pump sediment filters.
Monthly '
1. Clean converter orifice filters,
• Check that charge pump belts and pulleys are tight
and not slipping.
NOTE Some charge pumps are direct driven by the
engine and have no belts.
• Tighten all bolts and setscrews.
Quarterly
1" Drain and refill converter oil system.
• Clean orifice filters.
1.t Clean sediment bowl filters.
t Clean suction screen (inside oil tank).
• Replace converter oil filters.
• Drain and refill converter output housing.
1.t Drain and refill converter input housing (if equipped).
1.Check converter control adjustment.
1" Lubricate positioner air cylinders with 2 or 3 drops of
engine oil (with air off, disconnect air line to get oil into
cylinder). Check converter control system for loose or
worn parts.
1. Check converter positioner trunnions for wear and
excessive clearance. Clearance should not exceed 0.005
inch.
NOTE Cranes manufactured before July 1977 did not
have nylon bushings at the trunnion pins, How-
ever, they can be updated; see "Installing Trun-
nion Pin Bushings" in this Folio.
When Required
t Install positioner trunnion bushings.
t Overhaul converter positioner.
t Install converter sprocket.
• Adjust converter oil temperature switch.
(Continued)
FOLIO
941-4
395143
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