4-15. UNIT CLEANING PROCEDURES (CONT).
Dry cleaning solvent P-D-680 is toxic and flammable. Wear protective goggles, face mask, and
gloves and use only in a well ventilated area. Avoid contact with skin, eyes, and clothes and
don't breathe vapor. Do not use near open flame or excessive heat. The flashpoint for type I dry
cleaning solvent is 100°F (38°C) and for type II is 140°F (60°C). If you become dizzy while using
cleaning solvent, get fresh air immediately and get medical aid. If contact with eyes is made,
flush eyes with water and get medical aid immediately.
Electrical parts such as coils, connectors, switches, and insulated wiring, should not be soaked or sprayed with
cleaning solutions. Clean these parts with a clean, dry cloth moistened with dry cleaning solvent P-D-680 (item 31,
Do not use gasoline, diesel fuel, or other petroleum base products to clean or preserve hydraulic
components. Use of petroleum based products can change the lubricating quality of hydraulic
oil and cause failure or damage to equipment.
e. When cleaning hydraulic system components, use petroleum-free solvents. Clean and dry parts thoroughly to
make sure no residue remains. If preservative is required before reassembly, apply a light film of hydraulic fluid (item
19, Appendix E).
4-16. REMOVAL AND DISASSEMBLY OF COMPONENTS.
Before removal of any electrical component, disconnect battery ground cables.
Ensure that adequate clearance is available for removal of the component. Disassemble the sweeper to the
extent necessary to provide adequate working clearance.
All personnel must stand clear during lifting operations. A swinging or shifting load may cause
injury or death to personnel.
Use a chain hoist, jack or other aid when lifting heavier components. Lifting device should be positioned and
attached to components to remove all strain from mounting hardware, before last hardware is removed.
Discard O-rings, gaskets, seals and similar material when removed. Be sure that all traces of oil, gaskets and
sealants are removed. When possible, use wood or plastic probes and scrapers to prevent damage to machined
e. Cotter pins, lockwashers, lockwire, self-locking nuts and similar devices should be discarded when removed.
Sell locking fasteners that loosen up must be replaced, not tightened.