Bush Hog ATH 900 Maintenance, Section, The Cutter Can Fall From, Hydraulic System Failure. To

	SECTION IV
	MAINTENANCE
		8.During operation, listen for abnormal sounds
4-1 MAINTENANCE CHECK LIST
		which might indicate loose parts, damaged bearings,
Perform scheduled maintenance as outlined below.		or other damage. Correct any deficiency before con-
Lower implement to ground, turn off tractor, and set		tinuing operation.
parking brake before doing maintenance inspections
or work. Some checks may require raising machine			AFTER EACH USE
off ground and supporting with blocks. All bolts		1. Clean all debris from machine especially under-
should be torqued as indicated in torque chart on		side of deck, underneath belt shield and off safety
page 16 unless otherwise indicated.		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		graph 4-3.
tractor operator’s manual. Check mower tire pres-		4-2 LUBRICATION (Figures 4-1A, B & C)
sure. Tire pressure should be 40 psi.
2. Check blades and spindles to be sure that no				NOTE
foreign objects such as wire or steel strapping bands			The multi-purpose grease referenced in this
are wrapped around them.			secftion is an NLGI Grade 2 type grease.
3. Check blade bolts for tightness. Tighten to 76
ft./lbs.			BEFORE EACH USE
4. Inspect blades for wear. Replace if necessary		1. Driveline Universal Joints - Apply multi-pur-
per paragraph 4-5. Use only genuine Bush Hog		pose grease with grease gun.
replacement parts. If it is necessary to sharpen the		2. Driveline Guard - Apply 2-3 shots of multi-pur-
blades, remove the blades from the spindles before		pose grease with grease gun to plastic fitting.
sharpening. DO NOT sharpen blades while still		3. Wheels - Apply multi-purpose grease wiith
attached to mower.		grease gun.
5. Make certain all shields are in place and in		4. Caster Pivot - Apply multi-purpose grease with
good condition. Repair or replace any missing or		grease gun.
damaged shields.		5. Input Gearbox - Add EP80W-90 gear oil, if
6. Inspect wheel(s) for wear, damage or foreign		necessary, to bring oil level to check plug.
objects. Repair or replace if necessary.
7. Perform BEFORE EACH USE lubrication per				20 HOURS
paragraph 4-2.		6. Driveline - Disconnect PTO driveline, pull the
		two sections apart, apply thin coat of multi-purpose
Figure 4-1A
		grease to outside of inner (male) section.
		Reassemble sections and install. Pull each section
		to be sure driveline and shields are securely con-
		nected. Make certain PTO shielding is in good con-
		dition.
			Figure 4-1B	(6) 20 Hours

(3)	(4)				(2) Before EachUse
				(1) Before Each Use
		(5) Before Each Use
Before Each	Use
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