BRACKET AS 2174590 - Caterpillar

Table 1
176-9273 Piston Machine Effectivity    
Machine Sales Model     Machine Serial Number    
950G Wheel Loaders     (PIN: 2JS852, 856, 871-878 and 880-UP)    
(PIN: 4BS536-UP)
(PIN: 6NS251-UP)
(PIN: 3JW1147, 1151-1161, 1163-1184 and 1186-UP)
(PIN: 5FW1192, 1193, 1204, 1207-1213, 1215-1217 and 1219-UP)
(PIN: 5MW494-UP)
(PIN: 8JW288-UP)
962G Wheel Loaders     (PIN: 3BS550-556, 561-563, 565-569, 571-574 and 576-UP)    
(PIN: 5AS302-UP)
(PIN: 5RS220-UP)
(PIN: 4PW326-UP)
(PIN: 6EW260-UP)
(PIN: 6HW303-UP)
(PIN: 7BW514-UP)
IT62G Integrated Toolcarriers     (PIN: AKP337-339 and 341-UP)    
R1300 Load Haul Dumps     (PIN: 6QW894-UP)    The slotted clutch piston is adaptable to first production for all of the machines that follow: 936, 936E, 936F and G936 Wheel Loaders. 950B, 950E, 950F, 950F Series II and 950G Wheel Loaders. 960F, 962G, 966C (PIN: 18B1-UP; 9KC1-UP) and 966R (PIN: 58Z1-UP) Wheel Loaders. IT62G Integrated Toolcarriers and R1300 Load Haul Dumps.
Illustration 1 g00711432
Transmission Planetary Group (Typical Example) (1) Seal ring. (2) First speed clutch planetary carrier. (3) Clutch piston.Note: Service Engineering recommends updating any transmission that is removed and disassembled. Make sure that the transmission is equipped with seal ring (1) before updating the transmission. Some 950B, 950E, 966C and 966R Wheel Loader transmissions are not equipped with seal ring (1). If the transmission is not equipped with seal ring (1), the update provides no benefit.Modification ProcedureTransmissions may be updated with either of two methods. The existing 9G-5818 Clutch Piston (3) can be replaced or modified. Replace the 9G-5818 Clutch Piston (3) with a new 176-9273 Piston. Modify the 9G-5818 Clutch Piston (3) by using the procedure that follows.Note: Some of the 936, 936E, 936F, G936, 950B, 950E, 950F, 966C and 966R Wheel Loaders transmissions are built with less than five friction discs in the number five clutch. These transmissions are not equipped with the 9G-5818 Clutch Piston. If the transmission was not originally equipped with the 9G-5818 Clutch Piston, the new 176-9273 Piston cannot be installed. The existing clutch piston may be machined in order to add the slots. The new slots will increase oil flow.
Illustration 2 g00711539
(4) Machined slots.
Illustration 3 g00713994
Section E-E (4) Machined slot.
Illustration 4 g00711822
Detail C (5) Slot in the seal ring groove. (6) Opposite side of the seal ring groove.
Machine four slots (4) at 90 degree spacing on seal ring groove (5). Use a cutter with a 19 mm (.75 inch) diameter in order to machine the slots. Dimension (F) equals 5.7 mm (.23 inch). Dimension (G) equals 2 mm (.079 inch).Note: Make sure that the opposite side of the seal ring groove (6) is not damaged when the slots are machined.
Illustration 5 g00711823
Detail D (7) Slot in the seal ring groove. (8) Opposite side of the seal ring groove.
Machine four slots (4) at 90 degree spacing on seal ring groove (7). Use a cutter with a 19 mm (.75 inch) diameter in order to machine the slots. Dimension (H) equals 2 mm (.079 inch).Note: Make sure that the opposite side of the seal ring groove (8) is not damaged when the slots are machined.
Carefully deburr the slots, as needed.