RING-WEAR 3657619 - Caterpillar

Engines:
3508 (S/N: 23Z; 68Z; 69Z; 70Z; 95Y; 96Y; 97Y)
3512 (S/N: 24Z; 49Y; 50Y; 51Y; 65Z; 66Z; 67Z)
3516 (S/N: 25Z; 27Z; 28Z; 29Z; 4MJ; 5MJ; 71Z; 72Z; 73Z)
G3508 (S/N: 2JF; 9TG)
G3512 (S/N: 4KC; 7NJ)
G3516 (S/N: 3RC; 4EK)
3606 (S/N: 8RB)
3608 (S/N: 6MC)
3612 (S/N: 9RC)
3616 (S/N: 1PD)
Engine News SEBD9298, June 2001, "Reference For Springs For The Pneumatic Speed Control Setting On Woodward 3161 Governors". Disregard this article. This article has been replaced by the following article.There are governor control groups on the cover of Woodward 3161 Governors that are used for pneumatic speed control. Except for the speed springs (6), all of the governor control groups have the same serviceable parts. The serviceable parts of the governor control groups are identified in the illustration. The speed springs (6) have different spring rates that provide different speed ranges.
Illustration 1 g00804038
This illustration identifies the serviceable parts of the governor control groups. (1) 2W-0221 O-Ring Seal (2) 6V-5048 O-Ring Seal (3) 7W-0948 Bellows Assembly (4) 5P-5600 O-Ring Seal (5) 2W-0225 O-Ring Seal (6) Speed Spring (7) 2W-0125 Gasket The table provides a reference about the information that follows:
Engine family
Part Number of the Governor
Part Number of the Governor Control Group
Part Number of the Speed Spring (6)
Spring Rate
Table 1
Reference for Speed Springs for the Pneumatic Speed Control Setting    
Engine    Part Number of Governor    Part Number of Governor Control Group    Part Number of Speed Spring (6)    Spring Rate    
3500     124-3174,
124-3175     9Y-9857     9Y-9856     15.4 lb    
3500     124-3170,
124-3178,
124-3189,
130-2600     4P-6538     7E-9534     38.5 lb    
3500     124-3170,
124-3178,
124-3189,
130-2600     7C-3999     4W-6627     50 lb    
3600     161-1516     4P-6538     7E-9534     38.5 lb    
3600     108-6486,
161-1515     7C-3999     4W-6627     50 lb    
3600     161-1517,
161-1518     7E-8415     4W-6628     79 lb    
3600     109-1550     7E-8416     7E-8417     104 lb