Page 15
MAINTENANCE
1. LUBRICATION See Fig. 11- Grease all lubricating points on disc are marked with arrow G. The oil lubrication points are marked with arrow O.
G1) GANG BEARINGS - for 211 or 410 Series - Lubricate every 20 hours of operation with a minimum amount of grease. Excess lubrication
may damage seals. Use a high quality SAE multipurpose grease.
- for T2-215 Series - Lubricate every 20 hours of operation. Lubricate until grease comes out around seal, excess
lubrication will not damage seal. Use high quality SAE multipurpose grease.
CAUTION: FOR 211 OR 410 SERIES BEARINGS - IF GANG BEARINGS ARE OVER LUBRICATED, THERE IS A POSSIBILITY THAT THE SEALS
CAN BE PUSHED OUT. THIS IS MORE LIKELY TO HAPPEN WHEN BEARINGS ARE NEW.
NOTE: When you receive your new disc, grease all lubricating points before starting to disc. However, use caution when
lubricating 211 or 410 series gang bearings. These gang bearings are filled with grease at factory and seals may be
damaged if over lubricated.
G2) Lubricate wing pivot points with grease every 50 hours of operation.
G3) Lubricate levelling crank with grease every 100 hours of operation.
G4) Lubricate wheels with grease every 50 hours of operation.
G5) Lubricate top and bottom half of each rockshaft bearing every 20 hours of operation. If rockshaft bearings are not lubricated, there will be
excessive wearing of rockshaft and rockshaft bearings.
O1) Lubricate levelling crank ball joints (with oil) at the end and beginning of each season.
O2) Lubricate rockshaft cylinder pins (with oil) every 50 hours of operation.
2. All bolts and nuts should be checked periodically to make sure they are tight. Special attention should be given to gang bolts, bearing bolts
and bearing hanger U-bolts, and wheel bolts. If gang bolts come loose, they must be tightened to 3200 ft. lbs.
They should be tightened as follows:
S Gang bolts - 1-15/16" (49 mm) Diameter - 3200 ft. lbs (4336 N.m) torque
S Gang beam bolts - 1-1/4" (31.7 mm) Diameter - 840 ft. lbs (1138.2 N.m) torque (minimum/maximum)
S Levelling crank bolt - 1-1/4" (31.7 mm) Diameter - 840 ft. lbs (1138.2 N.m) torque(minimum/maximum)
S Wheel bolts - 9/16" (14.2 mm) Diameter - 130 ft. lbs (176.2 N.m) torque
S Bearing hanger U-bolts - 3/4" (19 mm) Diameter - 260 ft. lbs (352.3 N.m) torque (Model 4290 only with stone flex hangers)
S Bearing hanger U-bolts 5/8" (15.7 mm) Diameter - 150 ft. lbs (203.25 N.m) torque (Model 4290 only with solid hangers)
S Bearing hanger U-bolts 7/8" (22 mm) Diameter - 430 ft. lbs (582.65 N.m) torque (Model 4300 only)
Note: Gangs bolts should be re-tightened after 2 hrs of operation.
IMPORTANT!!!
SEVERE DAMAGE WILL OCCUR IF GANG BOLTS ARE LOOSE.
3. When storing disc for a long period of time, grease all lubricating points.
4. Ensure tires are properly inflated. See specifications on page 5 for tire pressures.
5. IMPORTANT: SEE FIG. 12. FOR DISCS EQUIPPED WITH T2-215 BEARINGS. IF T2-215 BEARING IS DISMANTLED, DOUBLE SET SCREWS MUST
BE REMOVED FROM BOTTOM OF HOUSING TO REMOVE CAP.
CAUTION: DO NOT SERVICE DISC WHILE IT IS IN MOTION. YOU MAY FALL IN FRONT OF DISC AND BE SERIOUSLY INJURED.
CAUTION: LOWER THE DISC TO THE GROUND WHEN SERVICING OR MAKING ADJUSTMENTS. IF THE DISC MUST BE SERVICED OR
ADJUSTED IN THE RAISED POSITION, PLACE BLOCKS UNDER FRAME. DO NOT RELY ON HYDRAULIC LOCK UP VALVES AS A
SAFETY DEVICE. IF THE HYDRAULIC SYSTEM FAILED, THE DISC WOULD DROP.
6. See ILL. 12. When reinstalling bearing hanger on T2-215 Bearing (if gangs are dismantled) do not over tighten the 5/8" x 10" (15.7 mm x 254
mm) bolts which fastens hanger to bearing. Secure nut by using a jam nut.
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