Manitou AETJL 170 User Manual

53
HYDRAULIC
70
547379EN
70 (08/03/2017)
ANALYSIS OF RESULTS
- THE BASKET REMAINS IN POSITION AND THE HYDRAULIC PRESSURE
HAS NOT DROPPED: the cylinder or the seals of the compensating
cylinder are faulty.
- Remove the compensation cylinder
(670.3.11 CYLINDERS  REMOVAL, 5 60)
- Remove the cylinder and check the condition of the seals. Change
the seals if required (see parts catalog)
- Check the condition of the cylinder barrel. Replace the cylinder if
it has scratch marks or traces of rust or pollution (see parts catalog)
- THE BASKET REMAINS IN POSITION AND THE HYDRAULIC PRESSURE
HAS DROPPED IN ONE OR BOTH HYDRAULIC LINE(S): there is a
problem with the seal or the settings of one or both valves of the
distributor block.
- Decompression of the compensation/tilting circuit (670.3.11
CYLINDERS  REMOVAL, 5 60)
- Remove the valve(s) (1, 070  30)and check the appearance of the
seals. Change the valves if the seals are defective (see parts catalog)
- Refit the valves then check their adjustment.............
(670.3.5 COMPENSATION/TILTING CIRCUIT  PRESSURE SETTING, 5 50)
- THE BASKET DROPS, THE PRESSURE ON BOTH MANOMETERS
TENDS TO BALANCE (+/- 10 BAR (145.1 psi)) OR THE PRESSURE
REMAINS CONSTANT IN LINE A5 AND FALLS IN LINE B5.
- Decompression of the compensation/tilting circuit (670.3.11
CYLINDERS  REMOVAL, 5 60)
- Remove the tilting cylinder (670.3.11 CYLINDERS  REMOVAL, 5 60)
- Remove the cylinder and check the condition of the seals. Change
the seals if required (see parts catalog)
- Check the condition of the cylinder barrel. Replace the cylinder if
it has scratch marks or traces of rust or pollution (see parts catalog)
70 - 30
1
1

Manitou AETJL 170 Specifications

General

Brand	Manitou
Model	AETJL 170
Category	Boom Lifts
Language	English