1977/05/30 Caterpillar

New Gasket Used At The Outlet Flange On Heavy-Duty Air Cleaner Group{1051}

Usage:

Attachments for D334, D342, D343, D346, D348, D349, D353, D379, D398 and D399 Engines

SUPPLEMENT: 07/11/77

SERVICE MAGAZINE, MAY 30, 1977, PAGE 1 In the article "New Gasket Used At The Outlet Flange On Heavy-Duty Air Cleaner Group", a wrong "Serial No. Prefix" is shown in the chart on Page 2. Change 62A shown for the D343A to read 62B.

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Description of Change: A gasket that seals on the inner circumference instead of the outer circumference of the air cleaner outlet flange is now used to give an improved seal. In some applications, rings are also used to improve the seal at this location. Longer bolts are necessary on most air cleaner groups when the rings are used.

Adaptable As: Shown in the chart.

Location of parts on 7L6014 Air Cleaner Group.

New and former gasket.

Caterpillar Information System:

1977/05/23 Method Of Piloting Power Generator To Engine Improved{1156,1157,4450}

1977/05/23 Install New Plugs To Prevent Oil Leaks At The Oil Filter Base{1306}

1977/05/23 Orifice In Oil Supply Passages Of BrakeSaver Stator Prevent Seal Leakage{1155}

1977/05/23 Parts In 1P3075 Seal Puller Group Available Separately{0621,1160,1161}

1977/05/16 Flare Nut Wrenches Available{0610}

1977/05/16 Use Special Instruction Form SEHS6929 For Repair And Maintenance Information On All Roll-Over Protective Structures (ROPS){7323,7325}

1977/05/16 Stronger Guide Assembly For Oil Level Gauge Used On Caterpillar-Built Engines In Massey-Ferguson Tractors{1300}

1977/05/16 New 5P4185 Fuel Pump Timing Pin To Be Used Only On 3408 And 3412 Engines{0650,1257}

1977/05/16 Correct Installation Of Valve Lifters On The Camshaft Is Very Important To Prevent Failures{1209}

1977/05/09 New Fuel Nozzle Assembly Available{1254}

1977/05/09 New Information On Caterpillar Cooling System Inhibitor{1350}

1977/05/09 Improved Air Cleaner Group{1051}

1977/05/30 Self Locking Bolts Or Hardened Washers Used In Place Of Sheet Metal Locks{3300}

1977/05/30 Improvements To Aftercooler Water Lines{1063,1380}

1977/05/30 Fabricated Tools For Assembly And Disassembly Of 7271 Marine Transmission{0621,3300}

1977/06/06 Improvements To Fuel Injection Pump And Governor{1286}

1977/06/06 New Tool For Installation Of Tandem Drive Chains On All Series G Motor Graders{0621,4063}

1977/06/06 Water Pump Has Stronger Pulley{1361}

1977/06/06 5P7386 Seal Driver For Hydraulic Pumps And Swing Motor{0622,5058,5070}

1977/06/13 New Adapter Group For Use With Fuel Injection Test Bench{0652}

1977/06/20 5P7333 Tool Group Available For The Repair Of Loose Bridge Dowels On Cylinder Heads{0663,1101}

1977/06/20 Socket For Removal And Installation Of Fuel Injection Pump Bushings is Now Stronger{0612,1253}

1977/06/27 More Of The Oversize (Larger) Cast Iron Seal Rings Are Available For Clutch Housings And Clutch Pistons{3169,3170}

1977/06/27 Correct Rebuild Kits Must Be Used For Repair Of Earlier And Later Water Pumps{1361}