50
BA550001-en
11.1
Manual/pneumatic-hydraulic pit jacks
Malfunction
Possible cause
Remedy
Air motor runs (typical
noise), but does not lift
any load
Drain spindle not fully
closed; spring does not
close completely
Replace drain spindle
and/or spring; contact
service
Oil level on the pit jack
too low due to transport
damage or natural
consumption
Top up oil
Leaking suction valves
Contact service
Air motor runs (typical
noise), but does not lift
the full load
Drain spindle not fully
closed; spring does not
close completely
Replace drain spindle
and/or spring; contact
service
Overload valve triggers;
load too high
Reduce load; observe
load capacity
Leaking load valves
Contact service
Air motor initially runs on
idle (typical noise), but
becomes increasingly
slower under load and
then stops completely
Air motor runs dry; no oil
in the maintenance unit
Top up oil
Air pressure too low;
local cause
Contact service
Air motor first lifts the
load a certain height and
then pumps through
empty
Oil level on the pit jack
too low due to transport
damage or natural
consumption
Top up oil
Air motor first lifts the
load a certain height and
then slows down more
and more
Air filter clogged; dirt
from the pipe network
Cleaning
Air pressure too low;
local cause
Contact service
Air volume too low; local
cause
Contact service
Air motor first lifts the
load a certain height and
then slows down more
and more until it comes
to a standstill
Air pressure too low;
local cause
Contact service
Air motor runs very
slowly even when idling
Air filter clogged; dirt
from the pipe network
Cleaning
Air motor runs dry; no oil
in the maintenance unit
Top up oil
Air pressure too low;
local cause
Contact service
Summary of Contents for MPJ Series
Page 6: ...6 BA550001 en Blank page...
Page 13: ...BA550001 en 13 6 Technical data 6 1 Relevant pit dimensions...
Page 29: ...BA550001 en 29 10 mm...
Page 35: ...BA550001 en 35...
Page 39: ...BA550001 en 39 I F H G J A E C D K B...
Page 114: ...20 PL670000_002 de...