2000/10/16 Caterpillar

Articulated Truck:

D350E (PIN: 9LR1-UP)

D400D (PIN: 8TF1-UP)

D400E (PIN: 2YR1-UP)

Cold Planer:

PM-465 (PIN: 5ZS1-UP)

Landfill Compactor:

826G (PIN: 7LN1-UP)

Soil Compactor:

825G (PIN: 6RN1-UP)

Motor Grader:

16G (PIN: 93U1-UP)

16H (PIN: 6ZJ1-UP)

Pipelayer:

578 (PIN: 8HB1-UP)

583R (PIN: 2XS1-UP)

Road Reclaimer/Soil Stabilizer:

RM-350 (PIN: 5FK1-UP)

RM350B (PIN: 7FS1-UP)

RR-250 (PIN: 6ED1-UP)

RR-250B (PIN: 3RR1-UP)

SM-350 (PIN: 1RM1-UP)

SS-250 (PIN: 6DD1-UP)

SS-250B (PIN: 5GR1-UP)

Track-Type Tractor:

D8R (PIN: 7XM1-UP; 9EM1-UP)

Wheel Loader:

980G (PIN: 2KR1-UP; 2SR1-UP; 9CM1-UP)

Wheel Tractor:

824G (PIN: 4SN1-UP)

Wheel Tractor-Scraper:

621E (PIN: 2PD1-UP; 6AB1-UP)

621F (PIN: 4SK1-UP; 8PL1-UP)

623F (PIN: 5EW1-UP; 6BK1-UP)

627E (PIN: 7CG1-UP)

627F (PIN: 1DL1-UP)

Description of Change: New sleeves for the exhaust ports are now used on the engines in these machines. The new sleeve has a larger radius between the flange and the straight portion of the sleeve that is the port insulator. The weld has been moved further away from the flange.

Adaptable To: The new 194-8124 Sleeve is a direct replacement for the former 107-5670 Sleeve. The former sleeve has been cancelled. The new 194-8124 Sleeve is adaptable to all the listed machines.

Illustration 1	g00739331
New 194-8124 Sleeve (A) Larger Radius

Illustration 2	g00739332
Former 107-5670 Sleeve (B) Small Radius

Use a hand grinder and make a chamfer that is approximately 1.5 mm (0.06 inch) by 30 degrees around the outer edge of the exhaust ports in the cylinder head before the new 194-8124 Sleeves are installed in the cylinder head. The chamfer will provide clearance for the radius of the sleeve. The chamfer will prevent the sleeve from seating on a sharp edge when the exhaust manifold is installed. Refer to Illustration 3.

Note: The sleeves for the exhaust ports should be replaced during an engine overhaul.

Illustration 3	g00739483
Cross section of exhaust port in cylinder head (C) 30 Degrees (D) 1.5 mm (0.06 inch)