1984/01/23 Caterpillar

Housing Assembly Now Has Sleeve To Prevent Housing Damage{3306}

Usage:

7241 Marine Transmissions

Description of Change: A wear sleeve has been added to the housing component groups on 7241 Marine Transmissions. This wear sleeve was added to prevent wear in the top shaft bore in the housing assembly. Formerly, if the bore was damaged, it was necessary to increase the bore diameter so a bushing could be installed. In extreme conditions, replacement of the housing assembly was necessary.

The new sleeve is held in place by a dowel, a new cap and two new bolts.

A new housing group is available as a service replacement for the earlier housing assemblies. This new housing group has the new sleeve, dowel and bearing cap.

Adaptable As: The new 3T9227 Sleeve, 2H2255 Dowel, 3T9226 Cap, 1D4556 Bolts and 5P8244 Washers are in effect on 7241 Marine Transmissions (39E524).

For service, the new 6T1738 Housing Group is a direct replacement for the former 3N8021 Housing Assembly.

See the illustration for the location of the new parts.

Location of new parts.

Caterpillar Information System:

1984/01/23 New Plastic Impeller Will Help Improve Service Life Of Water Pump Seal{1361}

1984/01/16 New Cover And Lever Will Prevent Overtravel Of Valve Spool {3313}

1984/01/09 Drive Block Retainer Plates Are No Longer Used{3305}

1984/01/09 Parts Service Information For Pistons{1214,1225}

1984/01/09 High Levels Of Soot In The Oil; Make Sure Air Fuel Ratio Control Operates Correctly{1278}

1984/01/09 Usage Of Pistons With Rectangular Rings{1214,1215}

1984/01/09 Stronger Water Cooled Exhaust Manifold Used{1059}

1984/01/09 Water Pump Housing Is Now Available For Parts Service{1373}

1984/01/09 Reference Chart For Usage Of New Electronic Components{7400,0374}

1983/12/19 FT1808 Cable Permits Easier Use Of 6V2100 Multitach To Check Engine Or Alternator RPM{0651}

1983/12/19 New Monitor Groups Will Keep Water Out Of EMS Panel{7490}

1983/12/19 Replacement Valve Guides Can Be Used To Recondition Cylinder Heads{1104}

1984/01/23 Remanufactured Connecting Rod Assemblies{1218}

1984/01/23 New Overhaul Kit For Sea Water Pump Has Improved Impeller{1364}

1984/01/30 New Water Temperature Regulator Helps Prevent Engine Overcooling{1355}

1984/01/30 Correct Wiring And Fuse Must Be Used For Correct Operation Of Shut-Off Solenoid Group{1259}

1984/01/30 3406B Engines Available{1000}

1984/01/30 Modification May Be Necessary To 6V4902 Hose Press Tool{0623,0624,0665}

1984/01/30 Larger Capacity Oil Pan Permits Longer Oil Change Interval{1302,1307}

1984/02/06 New Service Tools Available {0600}

1984/02/06 Correct Oil Pressure Setting For Marine Transmissions {3353,3354}

1984/02/06 New Cylinder Head Assembly Made With A Different Material {1101}

1984/02/06 New Water Pump Groups Have Improved Impellers And Shafts {1361,1364,1389}

1984/02/06 Product Information System Available On Dealer Terminal System (DTS) For U.S. And Canadian Dealers {0371}