nifty HYBRID DC HR15N Series, Service Manual

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57
English 07/16
Service Manual
HR15/17N HYBRID DC
6.4 Gearbox Fault Finding
Problem
Cause / Test
Solution
Oil leakage
from seals
Hardening of the seals due to
prolonged storage
Clean area and check for leakage after a few days
Seals damaged or worn Contact a Niftylift approved service centre
Too much lubricant Check oil level (See section 3.2.1)
Vibrations
and/or
excessive
noise
Wheel gear is not correctly
installed
Check the fixing
Internal anomaly Contact a Niftylift approved service centre
Bearings badly lubricated or
faulty
Contact a Niftylift approved service centre
Dented or chipped teeth Contact a Niftylift approved service centre
Low oil level Check oil level, top-up if necessary (See section 3.2.1)
The brakes
fails to
disengage
Low pressure in the braking
circuit
Check the brake connection
Brake stuck due to prolonged
storage Apply pressure to the brake and turn the wheel by turning the
motor on
Brakes do
not engage Residual pressure in the
circuit
Check hydraulic circuit
Over-
heating
Either too much or too little
oil
Check the oil level
Unsuitable lubricant Check the lubricant type and condition
Bearings badly lubricated or
faulty
Contact a Niftylift approved service centre
Multiple-disc brake not
opening completely
Check brake opening pressure
High thermal power Contact a Niftylift approved service centre