99903514:TELESCOPIC CRANE: 3A-2
SECTION 3A: CYLINDER REPAIR
20120521
TOOLS REQUIRED
Use the following tools in the disassembly and repair
of IMT cylinders:
PLASTIC AWL
FOR SEAL REMOVAL AND REPLACEMENT.
PLASTIC/RUBBER HAMMER
USED TO REMOVE STOP TUBE RING FROM
ROD.
SPANNER WRENCH ATTACHMENT
ATTACH TO A STANDARD TORQUE WRENCH
TO TORQUE OR REMOVE CYLINDER HEADS
AND PISTONS. SEE CHART AT END OF
SECTION TO SELECT ATTACHMENT FOR
YOUR PARTICULAR CRANE.
O-RING / ROD SEAL INSTALLATION TOOL
USED TO INSTALL / REMOVE O-RINGS &
SEALS. MEASURE ROD DIA. TO SELECT
CORRECT TOOL.
IMT PART # ROD DIA.
79075110 0.75 - 1.5 “
79075111 1.5 - 2-0"
79075112 2.0 - 3.0"
WARNING
REPLACE ALL SEALS WHENEVER THE CYLINDER
IS DISASSEMBLED. FAILURE TO DO SO CAN
CAUSE DEATH, SERIOUS INJURY OR EQUIPMENT
DAMAGE. REFER TO CRANE PARTS MANUAL
FOR CYLINDER SEAL KIT PART NUMBERS.
WARNING
FLAMMABLE CLEANING SOLVENTS POSE FIRE
AND HEALTH HAZARDS. READ AND OBEY THE
INSTRUCTIONS ACCOMPANYING ANY SOLVENTS.
KEEP A SUITABLE FIRE EXTINGUISHER PRESENT
WHENEVER USING FLAMMABLE SOLVENTS.
USE SOLVENTS IN A WELL VENTILATED AREA.
IGNORING THESE WARNINGS WILL CAUSE
SERIOUS INJURY OR DEATH. IMT RECOMMENDS
USING AN ALKALINE CLEANER.
WARNING
DO NOT USE COMPRESSED AIR TO ASSIST IN
WITHDRAWING THE PISTON/ROD ASSEMBLY.
COMPRESSED AIR MAY PROPEL THE PISTON/
ROD ASSEMBLY OUT OF THE CYLINDER AND MAY
CAUSE SERIOUS INJURY OR DEATH.
CAUTION
WHEN SOLVENT IS USED TO CLEAN THE
INTERNAL CYLINDER COMPONENTS, ALL TRACES
OF SOLVENT MUST BE REMOVED. ANY RESIDUE
WILL DAMAGE THE SEALS.
3A-1. CYLINDER DISASSEMBLY
These instructions apply to inner, outer, extension and
stabilizer cylinders.
1. Thoroughly wash the exterior of the cylinder case.
Blow dry with compressed air. Avoid lodging chunks of
material in oil passages.
NOTE
AFTER THE CASE HAS BEEN WASHED, PROCEED
WITH DISASSEMBLY IN A CLEAN ENVIRONMENT
WHICH IS FREE OF DUST AND DIRT.
2. Place the cylinder on a flat surface near a vise.
Slip a pin through the pin boss and clamp the pin in a
vise.
WARNING
RELEASE PRESSURE ON THE CYLINDER. FOR
CYLINDERS WITH HOLDING VALVES, SLOWLY
UNSCREW VALVES UNTIL PRESSURE IS
RELIEVED, THEN REMOVE VALVE. FOR
CYLINDERS WITHOUT HOLDING VALVES, SLOWLY
REMOVE PLUGS OR CAPS.
CAUTION
CLAMP ONLY THE PIN. DO NOT CLAMP THE
CYLINDER IN A VISE. DOING SO WILL DAMAGE
THE CYLINDER.
3. Using a spanner wrench, unscrew the head.
Withdraw the head from the cylinder case. Pull the
rod and piston assembly from the cylinder case using
an up-and-down or side-to-side motion. Set the
cylinder case to one side.
HEAD
SPANNER
WRENCH
TO
REMOVE
HEAD
CAUTION:
DO NOT USE A PIPE WRENCH TO TIGHTEN OR
LOOSEN THE HEADS. IT WILL DEFORM THE
METAL, DAMAGE THE MATING SURFACES, AND
PREVENT PROPER TORQUE MEASUREMENT.
To Next Page
Loading...
Need help?
General
