Bush Hog EFM 480/600 Maintenance, Section, The Cutter Can Fall From, Hydraulic System Failure. To

					SECTION IV
					MAINTENANCE
4-1 MAINTENANCE CHECK LIST							8.During operation, listen for abnormal sounds
Perform scheduled maintenance as outlined below.						which might indicate loose parts, damaged bearings,
Lower implement to ground, turn off tractor, and set						or other damage. Correct any deficiency before con-
parking brake before doing maintenance inspections						tinuing operation.
or work. Some checks may require raising machine								AFTER EACH USE
off ground and supporting with blocks. All bolts
should be torqued as indicated in torque chart							1. Clean all debris from machine especially under-
unless otherwise indicated.						side of deck, underneath belt shield and off safety
						decals. Replace any missing or illegible decals.
							2. Inspect cutter for worn or damaged compo-
				WARNING
						nents. Repair or replace before next use. Any
		THE CUTTER CAN FALL FROM
						replacement components installed during repair shall
		HYDRAULIC SYSTEM FAILURE. TO				include the components’ current safety decals speci-
		AVOID SERIOUS INJURY OR DEATH,				fied by the manufacturer to be affixed to the compo-
		SECURELY SUPPORT CUTTER BEFORE				nent.
		WORKING UNDERNEATH.					3. Store cutter in a dry place.
									40 HOURS
			BEFORE EACH USE.
							1. Check belt for proper tension. Refer to para-
	1. Check tractor tire air pressure. Refer to tractor					graph 4-3.
operator’s manual. Check mower tire pressure (if
pneumatic tires). Tire pressure should be 30 psi.						4-2 LUBRICATION (Figures 4-1A, & B)
		2. Check blades and spindles to be sure that
no foreign objects such as wire or steel strapping									NOTE
bands are wrapped around them.							The multi-purpose grease referenced in this
		3. Check blade bolts for tightness. Tighten					secftion is an NLGI Grade 2 type grease.
blade bolts to 76 ft./lbs.
	4. Inspect blades for wear. Replace if necessary							BEFORE EACH USE
per paragraph 4-5. Use only genuine Bush Hog
replacement parts. If it is necessary to sharpen the							1. Driveline Universal Joints - Apply multi-purpose
blades, remove the blades from the spindles before						grease with grease gun.
sharpening. DO NOT sharpen blades while still							2. Driveline Guard - Apply 2-3 shots of multi-pur-
attached to mower.						pose grease with grease gun to plastic fitting.
	5. Make certain all shields are in place and in						3. Wheels - Apply multi-purpose grease wiith
good condition. Repair or replace any missing or						grease gun.
damaged shields.							4. Caster Pivot - Apply multi-purpose grease with
	6. Inspect wheel(s) for wear, damage or foreign					grease gun.			40 HOURS
objects. Repair or replace if necessary.
	7. Perform BEFORE EACH USE lubrication per						5. Input Gearbox - Add EP80W-90 gear oil, if nec-
paragraph 4-2.						essary, to bring oil level to check plug.
									20 HOURS
							6. Driveline - Disconnect PTO driveline, pull the
Figure 4-1A						two sections apart, thoroughly clean old grease from
	(5) Before Each Use					tubes and apply thin coat of multi-purpose grease to
						outside of inner (male) section. Reassemble sec-
						tions and install. Pull each section to be sure drive-
						line and shields are securely connected. Make cer-
						tain PTO shielding is in good condition.
							Figure 4-1B			(6) 20 Hours

(3) Before Each Use

			(2) Before Each Use
(4) Before Each Use		(1) Before Each Use
	11