1977/08/08 Caterpillar

Correct Adjustment Of Fuel Shut-Off Solenoid Shaft Can Prevent Failures{1259}

Usage:

Engines With Scroll-Type Fuel Systems And 12, 24 Or 32 Volt Solenoid Shut-Off Groups In All Applications

Wrong adjustment of the shaft for the fuel shut-off solenoids has caused a number of failures of the solenoids. These failures can be prevented if the procedure that follows is used.

Procedure to adjust the shaft:

1. Make adjustments so the plunger is .44" (11.2 mm) from the flange face as shown in the illustration.

2. Adjust the shaft to the dimension shown in the chart.

3. Check to see that:

A. The engine high idle is correct. See the Service Manual.

B. The engine can be stopped from high idle.

C. The solenoid current is less than 2 amperes on a ammeter during engine shutdown.

4. If needed, make adjustments to the shaft until you have all three conditions in step 3.

Fuel shut-off solenoid.

Caterpillar Information System:

1977/07/11 New Inserts To Repair Cylinder Liner Seats On D353 Engine Blocks{1201,1216,1217,0663,0653}

1977/07/11 Heat Absorbing Material Aids And Protects Surface Areas Being Welded Or Heated{0680}

1977/07/11 New Component Code List For Use In The Service Information Retrieval System{0331,0374}

1977/07/11 Safety Vent Caps For Caterpillar Batteries{1401}

1977/07/11 New Adjustment Pin And Valve Seal Used In Fuel Ratio Control{1278}

1977/07/11 Baffle Added To Water Pump Cover To Send Coolant In Bypass Line Directly Into The Water Pump{1361}

1977/07/11 Some Earlier Vickers Hydraulic Pump Groups Are Not Available For Parts Service--Some Modification Is Needed To Install Replacement Pump Groups{5055}

1977/07/11 Tools To Install Crankshaft Seal And Wear Sleeve{1160,1161,0622}

1977/07/04 New Procedure For Calibration Of 1P3060 Pyrometer Group{0653,1050}

1977/07/04 New Seal For Crankshaft{1161}

1977/07/04 Use New Procedure To Tighten Flywheel Housing Bolts{1157,1201}

1977/07/04 Tools To Hone (Machine) Cylinder Liners Are Available To Permit The Use Of Used Cylinder Liners With New Style Pistons{0664,1214,1216}

1977/08/08 New Vickers Pump Design{5055}

1977/08/08 Larger Boss Used In Cylinder Block So Bolt Hole Will Not Be Drilled Into Coolant Passage{1201,1350}

1977/08/08 Spacers Added To Alternator Group To Improve The Mounting{1405}

1977/08/08 New Air Inlet Manifold Has Longer Bolt Bosses With More Thread Depth To Keep Bolts Tight{1058}

1977/08/08 Clean Bolt Holes In Cylinder Block Before Cylinder Heads Are Installed{1101,1201}

1977/08/15 Tools From Caterpillar To Test And Charge Air Conditioners And For Repair Of Frigidaire Compressors{7320,0651}

1977/08/22 New Main And Connecting Rod Bearings Are Made Of Higher Strength Material{1230}

1977/08/22 Tools Now Available To Ream And/Or Hone 0.500" (12.70 mm) Diameter Valve Guides{0663}

1977/08/22 Improved Coolant Seal For Connection Between Cylinder Heads{1100,1350}

1977/08/22 Be Sure To Drain Oil In BrakeSaver At Every Lubricating Oil Change Period{1155,1300}

1977/08/22 Problems With Oil Or Fuel Filters{1261,1318}

1977/08/22 Installation Of Generator Sets On Rigid Bases{4450}