1978/05/01 Caterpillar

New 5P8709 Piston Tool Group For The Alignment Of Piston Cooling Jets{0650}

Usage:

D343, D346, D348, D349, 1693, D353, D375, D379, D398, D399, 3406, 3408, 3412, G343, G346, G349, G353, G379, G398, G399 Engines

A new tool group, (see Illustration 1) is available to check the alignment of the piston cooling jets in the above engines. Wrong alignment of the cooling jets can cause cracks in the pistons and expansion of the piston rings. Piston ring expansion can cause scuffing (scratches in the cylinder wall) and/or seizure of the pistons.

Illustration 1. 5P8709 Piston Tool Group.

The new tool group is used on the Caterpillar Fuel Injection Test Bench and the oil supply, for lubrication, is connected to it. The oil is pumped (pushed with a pump) through the cooling jet and at the 5P8597 Target. A wrench is used to bend the cooling jet until the oil passes through the correct hole in the target (see Illustration 2).

Illustration 2. Wrenches included in the tool group can be used to bend the jet until oil passes through the target.

Caterpillar Information System:

1978/05/01 5P8719 Hydraulic Hand Pump Decreases The Time Needed To Move Ram Pistons Under No Load{0621}

1978/04/24 New Oil Pressure Gauge Available For Marine Transmissions Used On D348, D349, D353, D379, D398, D399, 3406 And 3408 Marine Engines{7457,3300}

1978/04/24 Improved Water Separator Element And Retaining Clamp Stops Fuel Leakage{1250}

1978/04/24 Cylinder Block Has New Cover With An Oil Return Connection For Rockford Fan Drive{1201}

1978/04/24 Oil Grooves And Harder Gears Are Now Used In The Oil Pumps On 6.25" Bore Vee Engines{1304}

1978/04/24 Do Not Use The 5B1401 Cleaning Tool Group To Clean The Orifice In Capsule-Type Fuel Injection Nozzles{0650,1254}

1978/04/24 Use 6V100 Tool Arrangement To Remove And Install Piston Pin Bearings For Both Tapered And Standard Connecting Rods{0620,1218}

1978/04/17 Improved Oil Suction Tube Assembly {3300,3302}

1978/04/17 Locating Bushings For The 5P3550 Rod Boring Machine Will Now Hold Tapered Piston Pin Bushings {0626}

1978/04/17 Improved Yokes, Hardened Washers And More Torque Keep Valve Lifter Guides Tight {1209}

1978/04/10 New Lifting Eye Group Used On 3412 Industrial Engines Equipped With Turbochargers{1101,1000}

1978/04/10 New 5P9693 Reusable Cable Tie For Storage Of Wires, Cables And Tubing{0630}

1978/05/01 Correct Installation Of Lip-Type Seals In Hydraulic Oil Pumps{5055,5073}

1978/05/01 O-Ring Seals Of A Different Material Are Now Used On The Outside Diameter Of The Servo Cylinder In Governors{1264}

1978/05/01 External (Outside) Oil Lines Now Used Instead Of The Oil Passage In The Cylinder Block And Flywheel Housing{1307}

1978/05/01 Double-Walled Fuel Injection Lines Protect Unattended Industrial And Marine Engines{1252,0353}

1978/05/01 Improved Tube Assemblies For Engine Oil Lines{1307}

1978/05/01 New 5P7335 Rack Adjusting Tool Available{0654,1257,1264}

1978/05/01 Water Separator Added To Give Protection To The Sleeve Metering Fuel System{1250}

1978/05/08 New Water Temperature Regulator Housing Cover Has A Check Valve{1380,1355}

1978/05/08 Longer Hoses Used At Radiator Lower Hose Connections{1380}

1978/05/08 Timing Dimension For Fuel Injection Pumps Changed; 1P7410 Timing Plates Have More Exact Degree Marks{0650,1250}

1978/05/08 Coolant Syringe And Battery Fluid Probe Now Available{0651}

1978/05/08 Threads In Aluminum Housings On Hydraulic Pumps Can Be Damaged, If Bolts That Are Too Short Are Used{5073}