Preventative Maintenance; Trouble Shooting Guide - Pig DRM652 / 7848 Manual

1) Check hydraulic oil level. Should be approximately 1" from top of filler hole. Use a general purpose
medium weight hydraulic fluid. New Pig Item# DRM673
2) Check for loose nuts, bolts and pins.
3) Check Ram Plate to insure that it is secure to the hydraulic cylinder shaft. Run unit empty to full extension
of the hydraulic cylinder. Allow the unit to build full pressure, this will lock the cylinder in place so that it
can be tightened or removed. Caution - Loosen set screw before attempting to tighten or remove ram plate.
Tighten set screw after adjusting
Hydraulic pump runs, but ram will not move.
• Hydraulic fluid is low - Use a medium weight hydraulic fluid and fill to within 1" of the top of filler
hole with the ram in the up position.
• Up and down lever is not fully engaged - Make sure lever is moved completely to the up or down
position.
• Breather cap on the hydraulic pump is closed - Open cap.
Waste pump runs, but will not pump.
• Check hoses for obstructions.
• Check filter screen and clean.
Hydraulic pump will not run.
• Safety cover micro is not fully engaged - Make sure it is fully closed.
• Safety cover micro is out of alignment - Adjust micro so it is fully engaged when cover is in the closed
position.
• Tilt micro is not fully engaged - Make sure the compactor is in the upright position and the locking pins
are fully extended and depressing the micro.
• Tilt micro is out of alignment - Adjust micro so it is fully depressed when compactor is in the upright
position and the locking pins are fully extended.
• Check power supply to the unit.
Loose Ram Plate
• Ram plate is loose - Run the compactor empty to full extension of hydraulic cylinder. Allow unit to
build full pressure, this will lock the cylinder in place so it can be tightened or removed.
CAUTION: Loosen set screw before attempting to tighten or remove ram plate.

8 Preventative Maintenance

9 Trouble Shooting Guide

17