Improved Operator Seat Air Compressor Is Now Available for Certain Machines {731K, 7324} Caterpillar

Articulated Truck

725 (S/N: B1L1-UP)

725C (S/N: LFB1-UP; TFB1-UP)

730 (S/N: B1M1-UP)

730C (S/N: LFF1-UP; TFF1-UP)

730C EJECTOR (S/N: LFH1-UP; TFH1-UP)

735B (S/N: L4D1-UP; T4P1-UP)

735C (S/N: LFJ1-UP; TFJ1-UP)

740B (S/N: L4E1-UP; T4R1-UP; E4S1-UP)

740B EJECTOR (S/N: L4F1-UP; T4S1-UP)

740C EJECTOR (S/N: LFN1-UP)

745C (S/N: LFK1-UP; TFK1-UP)

Compact Wheel Loader

914G (S/N: PDF1-UP)

914G2 (S/N: KNP1-UP)

IT14G2 (S/N: ERP1-UP)

Integrated Toolcarrier

IT14G (S/N: FWL1-UP)

Landfill Compactor

816F Series 2 (S/N: BZR1-UP)

826G (S/N: 7LN1-UP)

826G Series II (S/N: AYH1-UP)

826H (S/N: AWF1-UP)

826K (S/N: 2321-UP; SET1-UP)

836G (S/N: BRL1-UP; 7MZ1-UP)

836H (S/N: BXD1-UP)

836K (S/N: LWZ1-UP; TWZ1-UP)

Motor Grader

120M (S/N: B9C1-UP; D9W1-UP)

120M Series 2 (S/N: M9C1-UP; M9H1-UP; R9N1-UP; R9W1-UP)

12M (S/N: B921-UP)

12M Series 2 (S/N: F9B1-UP; F9M1-UP; R9P1-UP; R9S1-UP)

12M Series 3 (S/N: N9B1-UP; N9F1-UP; N9P1-UP; N9R1-UP)

140M (S/N: B9D1-UP; D9G1-UP)

140M Series 2 (S/N: M9D1-UP; R9G1-UP; M9J1-UP; R9M1-UP)

140M Series 3 (S/N: N9D1-UP; N9G1-UP; N9J1-UP; N9M1-UP)

14L (S/N: B941-UP)

14M (S/N: R9J1-UP)

14M Series 3 (S/N: N9S1-UP)

160M (S/N: B9E1-UP; D9T1-UP)

160M Series 2 (S/N: R9L1-UP; R9T1-UP)

160M Series 3 (S/N: N9E1-UP; N9K1-UP; N9L1-UP; N9T1-UP)

16M (S/N: R9H1-UP)

16M Series 3 (S/N: E9Y1-UP; N9Y1-UP)

24H (S/N: 7KK1-UP)

24M (S/N: B931-UP)

Off-Highway Truck/Tractor

770 (S/N: BZZ1-UP)

770G (S/N: TWA1-UP; KDH1-UP; ECM1-UP; ECX1-UP)

772 (S/N: RLB1-UP)

772G (S/N: LTS1-UP; KEX1-UP; LTX1-UP)

777G (S/N: GT71-UP; T5A1-UP; TNM1-UP; RDR1-UP; T4Y1-UP)

785G (S/N: RTL1-UP)

789D (S/N: SPD1-UP; TWP1-UP)

793F (S/N: SSP1-UP; RBT1-UP)

794 AC (S/N: MN51-UP; MT51-UP)

795F AC (S/N: ERM1-UP)

795FAC XQ (S/N: SNT1-UP)

797F (S/N: LAJ1-UP; WSP1-UP)

MT4400D AC (S/N: MT41-UP)

OEM POWERTRAIN (S/N: DTE1-UP)

Pipelayer

PL61 (S/N: WGS1-UP)

PL72 (S/N: P721-UP)

PL83 (S/N: CB21-UP)

PL87 (S/N: TEC1-UP)

Quarry Truck

773G (S/N: MWH1-UP; JWS1-UP; T5S1-UP; T5T1-UP)

775F (S/N: DLS1-UP)

775G (S/N: T5F1-UP; RFM1-UP; MJS1-UP)

Soil Compactor

815F Series 2 (S/N: BYN1-UP)

825H (S/N: AZW1-UP)

825K (S/N: 2331-UP; SEE1-UP)

Track-Type Loader

953D (S/N: LBP1-UP)

963C (S/N: 2DS1-UP)

963D (S/N: LCS1-UP)

973 (S/N: 86G1-UP)

973D (S/N: LCP1-UP)

Track-Type Tractor

D10R (S/N: 3KR1-UP; AKT1-UP)

D10T (S/N: RJG1-UP)

D10T2 (S/N: RAB1-UP; JJW1-UP)

D11R (S/N: 9TR1-UP; 7PZ1-UP)

D11T (S/N: AMA1-UP; GEB1-UP; MDG1-UP; JEL1-UP)

D3K (S/N: FFF1-UP; LLL1-UP)

D3K2 (S/N: KF21-UP; KL21-UP; FT31-UP; GAE1-UP; KFF1-UP; JPJ1-UP; KLL1-UP)

D4K (S/N: MMM1-UP; RRR1-UP)

D4K2 (S/N: KM21-UP; KR21-UP; RT31-UP; KMM1-UP; KRR1-UP)

D5K (S/N: JLF1-UP; WWW1-UP; YYY1-UP)

D5K2 (S/N: KW21-UP; KY21-UP; WT31-UP; YT31-UP; RRE1-UP; TRF1-UP; KWW1-UP; KYY1-UP)

D5R (S/N: D5L1-UP; D5X1-UP)

D5R2 (S/N: R5A1-UP)

D6K (S/N: DHA1-UP; HMG1-UP; FBH1-UP)

D6K2 (S/N: MXK1-UP; WMR1-UP; RST1-UP)

D6N (S/N: GB61-UP; PBA1-UP; LJR1-UP; PER1-UP; GHS1-UP; MLW1-UP)

D6R (S/N: EMM1-UP; JEN1-UP; 5LN1-UP; S6T1-UP; S6X1-UP; S6Y1-UP)

D6R2 (S/N: SSS1-UP; TTT1-UP)

D6T (S/N: CR31-UP; KSB1-UP; ZJB1-UP; JZC1-UP; SMC1-UP; DTD1-UP; RAD1-UP; STE1-UP; WCG1-UP; EJJ1-UP; SLJ1-UP; GMK1-UP; RRK1-UP; MEL1-UP; TSM1-UP; WLM1-UP; WRN1-UP; KMR1-UP; WES1-UP; GCT1-UP; SGT1-UP; JRW1-UP; RCW1-UP; TMY1-UP; HTZ1-UP)

D7E (S/N: HKA1-UP; TJA1-UP; SSH1-UP; TAN1-UP; LTW1-UP)

D7H (S/N: 5BF1-UP)

D7R (S/N: DSH1-UP; 9HM1-UP; DLN1-UP; 3DN1-UP; DJR1-UP)

D7R Series II (S/N: AEC1-UP; ABJ1-UP)

D8R (S/N: RJM1-UP; 9EM1-UP; T5X1-UP; 6YZ1-UP)

D8T (S/N: J8B1-UP; FMC1-UP; MLN1-UP; FCT1-UP; KPZ1-UP)

D9R (S/N: 8BL1-UP; WDM1-UP)

D9T (S/N: TWG1-UP; RJS1-UP; REX1-UP)

Underground Articulated Truck

AD30 (S/N: DXR1-UP; GXR1-UP)

AD45B (S/N: CXM1-UP)

AD55 (S/N: DNW1-UP)

AD55B (S/N: JNW1-UP)

AD60 (S/N: KNW1-UP)

Wheel Dozer

814F Series 2 (S/N: BXG1-UP)

824H (S/N: ASX1-UP)

824K (S/N: 2341-UP; RWB1-UP)

834H (S/N: BTX1-UP)

834K (S/N: LWY1-UP; TWY1-UP)

844 (S/N: 2KZ1-UP)

844H (S/N: BTW1-UP)

854K (S/N: H9K1-UP; H8M1-UP)

Wheel Loader

938F (S/N: 1KM1-UP)

950H (S/N: MXL1-UP; JLX1-UP)

950K (S/N: R4A1-UP; J5M1-UP; FER1-UP)

950M (S/N: EMB1-UP; FTR1-UP)

962H (S/N: SSA1-UP; PCW1-UP)

962K (S/N: T6A1-UP; FLL1-UP)

962M (S/N: EJB1-UP; F2T1-UP)

966F (S/N: 4YG1-UP)

966H (S/N: BJ61-UP; BS61-UP; A6D1-UP; RYF1-UP; A6J1-UP)

966K (S/N: PBG1-UP; TFS1-UP)

966K Series XE (S/N: NGX1-UP)

966M (S/N: DYC1-UP; KJP1-UP)

966M Series XE (S/N: P6C1-UP)

970F (S/N: 7SK1-UP)

972H (S/N: LCC1-UP; NPE1-UP; WXZ1-UP)

972K (S/N: PEM1-UP; Z4W1-UP)

972M (S/N: A8P1-UP; JPR1-UP)

972M Series XE (S/N: EDW1-UP)

980G (S/N: 2KR1-UP)

980G Series II (S/N: AXG1-UP)

980H (S/N: PF81-UP; MHG1-UP; KZL1-UP)

980K (S/N: W7K1-UP; GTZ1-UP)

980M (S/N: KRS1-UP; N8T1-UP)

982M (S/N: F9A1-UP; K1Y1-UP)

986H (S/N: L8S1-UP)

988F (S/N: 8YG1-UP)

988F Series II (S/N: 2ZR1-UP)

988G (S/N: BNH1-UP)

988H (S/N: A7A1-UP; BXY1-UP)

988K (S/N: LWX1-UP; TWX1-UP)

990 Series II (S/N: 4FR1-UP)

990H (S/N: BWX1-UP)

990K (S/N: DJK1-UP; A9P1-UP)

992D (S/N: 7MJ1-UP)

992G (S/N: AZX1-UP; ADZ1-UP)

992K (S/N: 8801-UP; ZMX1-UP)

993K (S/N: Z4D1-UP; Z8D1-UP; Z4Z1-UP; Z8Z1-UP)

994H (S/N: DWC1-UP)

994K (S/N: MM91-UP; MRK1-UP)

Wheel Skidder

525C (S/N: 5251-UP)

525D (S/N: GKP1-UP)

535C (S/N: 5351-UP)

535D (S/N: MTP1-UP)

545C (S/N: 5451-UP)

545D (S/N: 4L51-UP)

555D (S/N: PGY1-UP)

Service Magazine, SEPD2021, 21, July 2015, Improved Operator Seat Air Compressor Is Now Available for Certain Machines. Disregard this article. See the replacement article that follows.

An improved operator seat air compressor kit is now available for the machines listed above. The new O-Ring in the compressor is more robust which provides better sealing and improves service life of the operators seat.

Table 1

New Parts List
Item	Quantity	Part Number	Description
1	1	370-8067	Compressor Kit (1)
	1	389-3201	Seat Air Compressor Kit(2)
	1	397-6405	Seat Air Compressor Kit(3)

(1)	Refer to Table 2 for Seat Suspension Gp used with this Compressor Kit
(2)	Refer to Table 3 for Seat Suspension Gp used with this Seat Air Compressor Kit
(3)	Refer to Table 4 for Seat Suspension Gp used with this Seat Air Compressor Kit

Table 2

Use 370-8067 Compressor Kit with the following Seat Suspension Groups
Quantity	Part Number	Description
1	348-2409	Seat Suspension Gp
1	373-8745	Seat Suspension Gp
1	348-2405	Seat Suspension Gp
1	348-2373	Seat Suspension Gp
1	370-8802	Seat Suspension Gp
1	436-8490	Seat Suspension Gp
1	399-1560	Seat Suspension Gp
1	355-6681	Seat Suspension Gp
1	421-1223	Seat Suspension Gp

Table 3

Use 389-3201 Seat Air Compressor Kit with the following Seat Suspension Groups
Quantity	Part Number	Description
1	372-7949	Seat Suspension Gp
1	358-9469	Seat Suspension Gp
1	417-6077	Seat Suspension Gp
1	417-6078	Seat Suspension Gp
1	420-9469	Seat Suspension Gp
1	397-2029	Seat Suspension Gp
1	451-5454	Seat Suspension Gp
1	451-5455	Seat Suspension Gp
1	451-5456	Seat Suspension Gp
1	424-6942	Seat Suspension Gp

Table 4

Use 397-6405 Seat Air Compressor Kit with the following Seat Suspension Groups
Quantity	Part Number	Description
1	237-3970	Seat Air Compressor Gp
1	261-7485	Seat Suspension Gp
1	366-5830(1)	Seat Suspension Gp
1	418-0346(2)	Seat Suspension Gp
1	191-2933	Seat Suspension Gp
1	199-5725(3)	Seat Suspension Gp
1	256-8768	Seat Suspension Gp

(1)	Available for change 02 and 03
(2)	Available for change 01 and 02
(3)	Available for change 10

Illustration 1	g03864741

Illustration 2	g03864742
Detailed view of area A

Replace the operator seat air compressor with any one of the compressor kits listed above in Table 1.

The improved air compressor kit is now available to all machines that are listed above.