1992/12/01 Caterpillar


Cylinder Pack Puller Groups Improved

Usage:


3300, 3400 And 1.7 Liter Families Of Engines

Description of Change: The cylinder pack puller groups have been improved. A new shorter base cone is used in the puller group. Also, the base plate and the bolt that fastens the plate to the cone have been eliminated. These changes allow the improved cylinder pack puller groups to be installed 25.4 mm (1.00 in) deeper into the cylinder. This increases the surface contact area with the liner and improves the tools pulling ability.

Adaptable To: The new 9U6630 Base Cone is a direct replacement for the 1U9825 Base Cone in the 8T0812, 6V9448, and 1U9593 Cylinder Pack Puller Groups for the 3300, 3400, and 1.7 Liter Families of Engines. The 1U9595 Base Plate and 307571 Bolt are not used with the new 9U6630 Base Cone.

The 1U9825 Base Cone can be modified to provide the same benefits as the new base cone. Use the procedure that follows to modify the 1U9825 Base Cone.


Illustration 1. Location of component to be removed from the cylinder puller pack groups. 9U6630 Base Cone (1). 1U9595 Base Plate (2). 307571 Bolt (3). Stud (4).

1. Remove the 307571 Bolt (3) and 1U9595 Base Plate from the bottom of the 1U9825 Base Cone (1). The bolt and base plate will NOT be reused.

2. Remove the 1U9825 Base Cone from the stud (4).


Illustration 2. Dimensions for modifying the 1U9825 Base Cone. (A) = 98.22 mm (3.867 in). (B) = 85.52 mm (3.367 in).

3. The length (A) of the unmodified base cone is 98.22 mm (3.867 in). Remove 12.7 mm (.50 in) of material from the base plate end of the base cone only. The length (B) of the modified base cone should be 85.52 mm (3.367 in).

4. Install the modified 1U9825 Base Cone on the stud (4).

Caterpillar Information System:

1992/12/01 New Cylinder Head Gasket Used
1992/12/01 New Unit Injector Sleeve Used In Cylinder Head Groups
1992/12/01 New Gasket And Plate Used In Front Housing Group To Help Prevent Oil Leaks
1992/11/01 List Of Service Publications
1992/11/01 Supplemental Coolant Additive Requirements
1992/11/01 Replacement Governors For Early Engines
1992/11/01 Improved Fuel Injection Line Assemblies And Clamps Used
1992/11/01 New Cylinder Head Gasket, Spacer Plate And Head Bolts Used and New Cylinder Liner Projection Measurement Method
1992/11/01 New Liner Seat Inserts Available
1992/10/01 3406 Truck Engine Component Update
1992/10/01 Oil Holes In Crankshaft Main And Rod Journals
1992/09/01 Thicker Head Gaskets Available For Use With Resurfaced Cylinder Blocks
1992/12/01 Left Handed Threads In Compressor Nut On Some Caterpillar Turbochargers
1993/01/01 New 9U6101 Lower Pilot Reamer Group Available
1993/01/01 New Fuel Priming Pump Kit Available
1993/01/01 Unit Injector Tip Seal Deterioration
1993/01/01 Part Number References For 0R2818, 0R2819, And 0R3231 Remanufactured 3208 Truck Engines
1993/01/01 Maintenance Tips For 60799 Exhaust Restrictor; Additional Spring Improves Performance Of 60799 Exhaust Restrictor
1993/01/01 Drive End Bearing Service For 50/75 Amp Brushless Alternators
1993/01/01 New Videotape "Detection of Air and Combustion Gases in the Cooling System" Available
1993/02/01 Low Idle Operating Expense
1993/02/01 Some Remanufactured Engine Information Plates May Contain Incorrect Horsepower And Performance Specifications
1993/02/01 New Oil Pump Groups Do Not Require Key On Drive Shaft
1993/02/01 Requirements For Installing A Different Model Year 3176 Truck Engine
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