99903514:TELESCOPIC CRANE:
2-18 SECTION 2: MAINTENANCE
B. Attach Pressure Gage (Procedure used depends on cylinder block used on crane.)
-Use Procedure 1 for cranes featuring a large valve block with a smaller block attached and the port
tubes welded directly to the valve block and cylinder.
-Use Procedure 2 for cranes with only one valve block and the port tubes are removable by use of
fittings on the valve block and on the cylinder.
1. Procedure 1 (Large valve block with smaller block attached – port tubes welded)
a. BE AWARE OF TRAPPED PRESSURE BEHIND THE PLUG IN THIS STEP!!
PRESSURIZED OIL MAY CAUSE SERIOUS INJURY!! Slowly remove #6 hex plug on the end
of the smaller block on the lower boom cylinder.
b. Install #6 MJIC fitting into the port that the plug was removed from.
c. Attach 5000 PSI liquid-filled pressure gage assembly using 4” hose assembly.
d. Be sure to tighten all fittings securely.
PRESSURE GAGE ASSEMBLY & 4” HOSE ASSEMBLY
Attach Pressure
Gauge Assembly
using 4” Hose
Assembly
Remove Plug and
install #6MSTR -
#6MJIC Fitting
Small
Block
Large
Block
Welded Port Tubes
20030115
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