93320A 7 Mercruiser RISER KIT, Exhaust (3.00 Inch)

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POWER TAKEOFF NEEDS TO BE CLEANED AND BEARINGS ADJUSTED AND REPACKED ON CERTAIN 3412 INDUSTRIAL ENGINES - MAILED US, CAN ADA, COSA
  The information supplied in this service letter may not be valid after the termination date of this program.   Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.
U-119 O-67 PRIORITY 3055 PI3305 Termination Date
July 31, 1989
Problem
Too much grease may cause overheating of the main bearings in Twin Disc rear, power take-off clutches on 3412 Industrial Engines used with Morbark wood chippers.
Affected Product
Model Identification Number 3412 38S11074, 13227, 13397, 13398, 13401, 13441, 13443, 13445-13447, 13450, 13458, 13473-13475, 13478, 13491, 13500, 13509, 13516-13518, 13520, 13524, 13526, 13531, 13590, 13605, 13606, 13616, 13617, 13674
Parts Needed
Dealers will need to order parts for this Program. 1 - 9Y4298 Plate 1 - 3B8489 Fitting 2 - 5D7449 Cup (if needed) 2 - 4F7499 Cone (if needed)
Action Required
With the clutch at maximum operating temperature, remove the breather and bushing from the top of the bearing housing and check the temperature with a thermister probe. The probe must be long enough to reach the bottom of the hole. If the temperature is 200 deg.F or less, remove the existing instruction plate, transfer the data to the new plate and install the new instruction plate. Also, remove the breather from the top of the bearing housing and install a 3B8489 Fitting. Notify the operator that the lubrication interval has been changed to 1 shot of 2S3230 High Temperature Grease or an equivalent every 10 hours of operation. If the temperature is more than 200 deg.F or if there have previous reports of overheating of the bearings, see the attached procedure.
Owner Notification
U.S. and Canadian owners will receive the attached Owner Notification.
Service Claim Allowances
Caterpillar Dealer Suggested Customer Suggested Parts Labor Hrs. Parts Labor Hrs. Parts Labor Hrs. (C/L) (Sell) (C/L) (Sell) Measure Operating Temperature and Install New Instruction Plate 100% 4 0 0 0 0 Remove Clutch, Clean, Repack and Adjust Bearings and Install Clutch 100% 16 0 0 0 0
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling. MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE. Attach. (1-Owner Notification) (2-Rework Procedure) COPY OF
Owner Notification
FOR U.S. AND CANADIAN OWNERS XYZ Corporation 3240 Arrow Drive Anywhere, YZ 99999 PRIORITY - Power Take-Off Clutch Needs To Be Checked For Overheating MODELS INVOLVED - 3412 Industrial Engines Used With Morbark Chippers Dear Caterpillar Product Owner: Too much grease may cause overheating of the main bearings in rear, power take-off clutches on the products listed below. The temperature of the bearings in the power take-off clutch needs checked when the clutch is at normal operating temperature. If the temperature is too high, the clutch will need to be disassembled, cleaned and the bearings repacked and adjusted. The repair will be done at no cost to you. Contact your local Caterpillar dealer immediately and schedule a time to have this service performed. The repair time for this service is approximately four to twenty hours depending on repair needed. We regret the inconvenience this may cause you, but urge you to have this service performed as soon as possible to prevent unscheduled downtime. Caterpillar Identification #(s) Attached to July 30, 1988 Service Letter Rework Procedure 1. Disassemble the clutch and remove all grease from the bearing cavities and the bearings. Inspect the bearings and replace if necessary. 2. Assemble the main shaft and bearings in the clutch housing without grease. 3. Tighten the bearing adjusting nut while rotating the shaft until it takes 60 in lb to rotate the shaft. 4. Loosen the adjusting nut four notches plus up to one additional notch if necessary to align a notch with the lock plate bolt. Mark the position of the adjusting nut. This will provide bearing end play of .010-.012". 5. Disassemble the main shaft from the clutch housing and handpack the bearings with approximately four ounces (1/4 of a grease cartridge) of 2S3230 High Temperature Grease or an equivalent. The grease cavity SHOULD NOT BE PUMPED FULL OF GREASE either before or after the clutch is installed. 6. Assemble the clutch and