New Breather For Pump Drive Gear Box Is Remotely Mounted{3279}
Usage:
CP-553 ( 7BD ),
CS-553 ( 7AD ),
CS-551 ( 6ZD ) Compactors
Description of Change: The breather for the pump drive gear box is mounted remotely to eliminate oil leaking onto the drive gear box. The new breather is mounted near the throttle cable bracket using a new hose and clamp.
Adaptable To: The new 02008255 Hose (RayGo), 774454 Clamp (Caterpillar), and 779969 Breather (Caterpillar) are effective with 7BD135, 7AD285 and 6ZD176. Earlier models can be modified as shown in Illustrations 1 and 2.
Illustration 1. Modification to relocate breather for pump drive gear box.
Illustration 2. View of hose and breather from rear of engine.
Caterpillar Information System:
1988/01/04 Stronger Drive Plate And Longer Mounting Bolts Used In Drum Mounting Assembly; New Gear Box Mount Used In Propel System{8227}
1988/01/04 Optional Spray Nozzles Available{8227}
1988/01/04 Preparing Service Reports For Paving Products{0336,0370,8100,8200}
1988/01/04 New FT2253 Cable Assembly Drawing Available For Kent-Moore Fuel Injection Test Bench{0782}
1988/01/04 New Hose Assembly Used In Chassis Brake Control Group{4257}
1988/01/04 New Front Suspension Cylinder Assemblies And Relief Valve For Suspension Control Valve Used{7201,7214}
1988/01/04 8T3110 Gauge Assembly And 8T3111 Ring Gear Installer Available{0722}
1988/01/04 Checking Engine Power With A Power Take-Off (PTO) Dynamometer{3107}
1988/01/04 Part Numbers For Bulk Lengths Of Decal Stripes{7557}
1988/01/04 Be Sure To Follow Correct Procedure When Checking Transmission Primary Clutch Pressures With Transmission Installed In Machine{3150}
1988/01/04 New Differential Spool Prevents Shift Hesitation In Power Shift Transmissions{3152,3167}
1978/12/18 Caution: Do Not Change Orifice In Water Outlet Of Auxiliary Pump Group{1371}
1988/01/04 Shorter Vee Belts Will Increase Clearance Between Alternator And Engine Side Panel{1357}
1988/01/04 Die Cast Flywheel Housing Has Less Weight{1157}
1988/01/25 Improved Radiator Core Assemblies Used In Folded Core Radiators {1353}
1988/01/25 Suction Screen Added Inside Sump Fuel Tank {1273,1274}
1988/01/25 New Undercarriage Reconditioning Bulletin, "Guideline For Reusable Track Parts" {0374,4170}
1988/01/25 New Undercarriage Reconditioning Bulletin-Sealed And Lubricated Track Servicing Procedure For Non-Restrained Track {4150,0374}
1988/01/25 New Worldwide Identification Code Markings Used On Track Link Assemblies For Track-Type Tractors And Loaders {0336,4169,4171}
1988/01/25 New Microfiche Shows Part Numbers And Locations Of Decals And Stripes {0374,7557}
1988/01/25 Stronger Detent Cam Pin Arrangement Used In Selector And Pressure Control Valve Group Of Transmission Hydraulic Controls {3152,3158}
1988/01/25 New Seal Ring Used In Transmission Planetary Groups {3155}
1988/01/25 New Spring For Door Latch {7308}
1988/01/25 Larger Diameter Bolts Used In Lower Transmission Mountings {3000}