Tightening of the Swivel Nut for the AC Dryer {7322} Caterpillar


Tightening of the Swivel Nut for the AC Dryer {7322}

Usage:

375-A L 1JM
Articulated Truck:
730 (S/N: AGF1-UP)
740 (S/N: AXM1-UP)
Landfill Compactor:
826G Series II (S/N: AYH1-UP)
826H (S/N: AWF1-UP; ZXT1-UP)
836G (S/N: BRL1-UP)
836H (S/N: BXD1-UP)
Soil Compactor:
815F (S/N: BKL1-UP)
825G Series II (S/N: AXB1-UP)
825H (S/N: AZW1-UP; ZHC1-UP)
Excavator:
330B (S/N: 6DR1-UP)
345B Series II (S/N: AGS1-UP; ALB1-UP; APB1-UP; CCC1-UP)
365B Series II (S/N: DER1-UP; JMB1-UP)
375L (S/N: 1JM1-UP)
385B (S/N: RCD1-UP)
5230B (S/N: 4HZ1-UP)
Motor Grader:
12H (S/N: 2WR1-UP; 4XM1-UP; AMZ1-UP)
14H (S/N: ASE1-UP)
16H (S/N: ATS1-UP)
24H (S/N: 7KK1-UP)
120H (S/N: 6YN1-UP)
140H (S/N: 5HM1-UP; APM1-UP; CCA1-UP)
143H (S/N: APN1-UP)
160H (S/N: ASD1-UP)
Off-Highway Truck/Tractor:
773E (S/N: BDA1-UP)
777D (S/N: AGC1-UP)
785C (S/N: APX1-UP)
789C (S/N: 2BW1-UP)
793C (S/N: ATY1-UP)
Quarry Truck:
771D (S/N: BCA1-UP)
775E (S/N: BEC1-UP)
Paving Compactor:
CP-563E (S/N: CNT1-UP)
Track-Type Loader:
953C (S/N: BBX1-UP)
963C (S/N: BBD1-UP)
973C (S/N: BCP1-UP; LDX1-UP)
Track-Type Tractor:
D10R (S/N: AKT1-UP)
D10T (S/N: RJG1-UP)
D11R (S/N: 7PZ1-UP)
D5M (S/N: 7LR1-UP)
D5N (S/N: AGG1-UP; AKD1-UP; CKT1-UP)
D6M (S/N: 4JN1-UP)
D6N (S/N: AKM1-UP; ALH1-UP; ALY1-UP; CCG1-UP; CCK1-UP)
D7R Series II (S/N: ABJ1-UP)
D8R (S/N: 9EM1-UP)
D9R (S/N: WDM1-UP)
Wheel Dozer:
824G Series II (S/N: AWW1-UP)
834H (S/N: BTX1-UP)
854G (S/N: AMP1-UP)
Wheel Loader:
950G Series II (S/N: AXR1-UP; AXX1-UP; AYB1-UP; AYD1-UP; AYL1-UP; AYS1-UP; BAA1-UP)
962G Series II (S/N: AXS1-UP; AXY1-UP; AYE1-UP; AYG1-UP; BAB1-UP; BAC1-UP; BAD1-UP)
962H (S/N: J6J1-UP; K6K1-UP; M3G1-UP; N4A1-UP)
966G Series II (S/N: ANT1-UP; ANZ1-UP; AXJ1-UP; AXL1-UP; AWY1-UP; AWZ1-UP)
966G (S/N: 3SW1-UP)
966H (S/N: A6D1-UP; A6G1-UP; A6J1-UP)
972G Series II (S/N: ANY1-UP; AWP1-UP; AXC1-UP; AXE1-UP; AXN1-UP; AXP1-UP)
972H (S/N: A7D1-UP; A7G1-UP; A7J1-UP)
980G Series II (S/N: AWH1-UP; AXG1-UP; AYT1-UP)
980H Series II (S/N: MKP1-UP)
980H (S/N: A8J1-UP; JMS1-UP; MHG1-UP)
988H (S/N: BXY1-UP)
990H (S/N: BWX1-UP)
992G (S/N: ADZ1-UP; AZX1-UP)
Wheel Tractor-Scraper:
613C Series II (S/N: 8LJ1-UP)
621G (S/N: CEN1-UP)
623G (S/N: DBC1-UP)
627G (S/N: CEX1-UP; DBD1-UP)
631G (S/N: CLR1-UP)
637G (S/N: CEH1-UP; DFJ1-UP)
657E (S/N: 5YR1-UP)

Introduction

The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.

Problem




Illustration 1g01320862

(1) Date Code of Dryer

(2) Dryer

(3) Swivel Nut

There have been reports that the AC Dryer (2) is leaking at the location of the swivel nut (3). This leakage results in poor performance of the air conditioning system or unit.

The manufacturing process for the AC Dryer has resulted in low torque of the swivel nut on Dryers that were built before 1June 2006. The date code (1) would be marked "15206". The 3E-3535 Receiver-Dryer Group or the 175-7162 Receiver-Dryer Group built before this date should be tightened before being assembled into the AC system.

Note: The 175-7162 Receiver-Dryer Group service replaces the 3E-3535 Receiver-Dryer Group .




Illustration 2g01320874

(1) Date Code of the Dryer




Illustration 3g01323360

Date Code of the Dryer

(4) Day of the Year

(5) Year

(6) Shift

In order to understand the date code of "077063", refer to the following information:

  • The first three digits are the day of the year.

  • The fourth digit and the fifth digit are the year.

  • The sixth digit is the shift.

The date code reads as the seventy seven (77th) day of 2006 and on third (3rd) shift.

The supplier has corrected the low torque on the swivel nut for any dryer built with a date code on or after "15206".

Solution

Tighten the swivel nut to 27 ± 4 N·m (20 ± 3 lb ft).

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