SOLENOID AS 1151431 - Caterpillar

Track Idler
Illustration 6 g01439565
Track idler (Standard track) (18) Shaft (19) Thrust washer (20) Duo-cone seal
Illustration 7 g01445523
Track idler (SystemOne track) (18) Shaft (19) Thrust washer (20) Duo-cone sealEach track roller frame has a front idler and a rear idler. The front idler is slightly larger than the rear idler.The idler has Duo-Cone seals (20) at each end of shaft (18). Thrust washers (19) absorb the side load on the idler. The center of shaft (18) is an oil reservoir. This oil is used for lubrication of the bearing surfaces.Tracks
Illustration 8 g01439576
Track assembly (Standard track) (21) Seal assembly (22) Track link (23) Hole (24) Bushing (25) Cavity (26) Track link (27) Pin (28) Track link (29) Track link (30) Thrust ring (31) Plug (32) StopperEach track link fits over the preceding track link. Track link (22) fits over track link (29). Track link (26) fits over track link (28). Each track link has a counterbore in the end that fits with the preceding track link. The connections of the track links make up the track assembly.Seal assembly (21) is installed in the counterbores of each track link. Each seal assembly has a load ring and a seal ring. The load ring pushes the seal ring against the end of bushing (24) and the link counterbore. The seal ring provides a positive seal between the bushing and the link counterbore.Thrust ring (30) is installed on pin (27). The thrust ring provides a specific amount of compression to the seal assemblies. This compression controls the end play (free movement) of the track link joint. The arrangement of the seal assemblies and the thrust rings keeps the oil in the track link joint. The seals also keep foreign material out of the track link joint.Pin (27) has cavity (25) which is almost the full length of the pin. Hole (23) is drilled radially in the pin near the center of the pin. Radial hole (23) allows oil to go to the surface between pin (27) and bushing (24). This oil lubricates the pin and the bushing. This oil also lubricates the lip of the seal ring. The lip of the seal ring must be kept lubricated in order to prevent wear. Oil is kept in cavity (25) by stopper (32) and plug (31). Oil is installed in the track pin through a hole in the center of stopper (32). When the cavity is filled, plug (31) is installed in the stopper.
Illustration 9 g01452145
Track link box (33) Track link (34) Cartridge
Illustration 10 g01452146
Track Assembly (35) Inner track link (36) Outer track linkSystemOne track assembly has links (33) and cartridges (34). The new design of the cartridge takes the place of the former pin, the bushing, and the seal components. The cartridge contains the oil for the track joint. The cartridge is sealed and lubricated for life. The cartridge is a nonserviceable part. The cartridges are serviced only as a track link box. This servicing of only the track link box ensures that the critical alignment that is required