Instructions for Sorting and Replacing HVAC Actuators {1800, 7320} Caterpillar

Articulated Truck

725C2 (S/N: 2T3263-UP; 2L6146-UP)

730C2 (S/N: 2T4486-UP; 2L7246-298,302-UP)

730C2 EJ (S/N: 2T5141-UP)

735C (S/N: TFJ262-299,301-UP)

740C EJECTOR (S/N: LFN278-UP; TFN190-UP)

745 (S/N: 3T6155-UP)

745C (S/N: JE890119-UP; LFK1083-UP; TFK1571-UP)

Asphalt Compactor

CB64B (S/N: C56278-326,329-329,331-UP; 477160-UP)

CB66B (S/N: 475123-123,125-125,128-UP; B66202-UP)

CB68B (S/N: 496101-UP; C68117-UP)

CCS9 (S/N: C52108-UP)

CD10 (S/N: J6B102-UP)

Compact Track Loader

259D (S/N: FTL10979-10995,10997-10998,11000-11002,11004-11006,11008-11009,11011-11019,11021-11024,11026-11026,11028-12440,12442-UP)

279D (S/N: GTL3923-3923,3925-3927,3929-3929,3931-UP)

289D (S/N: TAW6661-6661,6663-6663,6665-6665,6667-6669,6671-6673,6675-7481,7483-UP)

Excavator

320D2 (S/N: BW2246-UP; CY2201-UP)

568 (S/N: BRB398-UP; YJX147-UP)

Forest Machine

538 (S/N: HBS159-UP; JEY168-UP)

Hydraulic Shovel

6020B (S/N: HS21-UP; DNR121-124,126-UP)

Knuckleboom Loader

2384C (S/N: KB6447-447,450-450,453-453,455-UP)

559C (S/N: KB4498-499,517-520,554-554,568-568,571-571,575-575,584-587,590-591,596-597,599-599,601-601,604-607,609-609,611-614,616-616,621-622,636-638,644-645,647-648,653-656,658-662,665-UP)

579C (S/N: KB5176-176,180-UP)

Landfill Compactor

816K (S/N: WNB211-UP; WCL104-UP)

826K (S/N: 2326275-UP)

836G (S/N: BRL75028-UP)

836K (S/N: TWZ612-UP)

Motor Grader

120N (S/N: E94204-UP; E95204-UP; Y9C201-UP; Y9D202-UP)

Multi Terrain Loader

257D (S/N: EZW1986-UP)

277D (S/N: FMT810-UP)

287D (S/N: HMT922-922,924-UP)

Off-Highway Truck/Tractor

770G (S/N: KDH370-UP; ECM343-343,351-UP)

772G (S/N: RME1-UP; LTS410-UP; KEX304-UP)

777G (S/N: GT7176-UP; TNM1016-UP; RDR507-UP; T4Y500-UP)

789D (S/N: TWP112-UP)

793F (S/N: SSP1171-UP)

795FAC XQ (S/N: SNT102-UP)

797F (S/N: LAJ622-UP)

Paving Compactor

CB10 (S/N: P8P101-139,143-UP)

CB7 (BUILD 01) (S/N: EL5101-UP)

Pipelayer

PL72 (S/N: P73130-UP)

PL83 (S/N: CB2176-UP)

PL87 (S/N: TEC171-UP)

Quarry Truck

773G (S/N: JWS388-UP)

775G (S/N: RFM917-UP; MJS599-UP)

Skid Steer Loader

236D (S/N: BGZ3323-UP)

246D (S/N: BYF3314-UP)

262D (S/N: DTB6514-UP)

Soil Compactor

815K (S/N: MBB304-UP)

825K (S/N: 2335023-UP; SEE213-UP)

Track Feller Buncher

521B (S/N: F7B382-382,384-UP)

522B (S/N: F7C341-UP)

552 Series 2 (S/N: F7G226-UP)

Track-Type Loader

953D (S/N: LBP2159-2159,2164-2164,2166-2225,2227-UP)

953K (S/N: LJT105-UP)

963D (S/N: LCS2521-UP)

963K (S/N: LBL397-398,433-514,516-UP)

973D (S/N: LCP466-UP)

Track-Type Tractor

D10T2 (S/N: RAB327-351,354-UP; JJW226-UP)

D11T (S/N: AMA701-UP; MDG183-UP; JEL430-UP)

D3K2 (S/N: KF22221-UP; KL22722-UP; FT32123-UP; LT32114-UP; JPJ2205-UP)

D4K2 (S/N: KM22349-UP; KR22325-UP; MT32125-UP)

D5K2 (S/N: KW22486-2602,2645-UP; KY22737-2737,3029-UP; WT32175-UP; YT32164-UP; RRE2218-UP)

D5R2 (S/N: R5A169-UP; WRE121-121,123-UP)

D6K (S/N: HMG780-780,785-UP)

D6K2 (S/N: EL7159-189,193-UP; MXK274-UP; MGM143-UP; DFR476-UP; JTR647-713,715-799,802-UP)

D6N (S/N: MG51011-1182,1184-UP; GB6515-UP; SGG139-UP; NJN133-UP; LJR1657-UP; P5S1-UP; P5T167-UP)

D6R2 (S/N: PPP169-173,175-UP; SSS461-469,471-471,473-473,475-475,477-UP; TTT199-UP)

D6T (S/N: CR3129-UP; 2B3101-107,109-UP; MB51-UP; AK7101-UP; MH7329-379,381-UP; 7C9103-UP; SGA106-UP; RAD1036-UP; STE130-UP; JML252-288,290-291,293-306,311-UP; MEL243-UP; JNM1-UP; WRN583-UP; K1R105-UP; KMR639-UP; WES417-UP; HYT1-UP; SGT509-509,553-UP; NDY203-UP; HTZ703-704,706-UP; SGZ1-116,118-120,122-124,129-UP)

D7E (S/N: HKA406-406,489-UP; SSH391-UP)

D8R (S/N: DWJ338-UP; MEJ261-267,278-UP; RJM480-UP)

D8T (S/N: FMC766-841,843-846,1000-UP)

D8T Series 2 (S/N: AW4321-UP)

D9T (S/N: TWG762-UP; REX482-501,504-UP)

Vibratory Asphalt Compactor

CB44B (S/N: TWC168-UP; JXL271-UP)

CB54B (S/N: RJN369-UP; S4P276-UP)

CCS7 (S/N: 4B2107-UP)

CD8 (S/N: RH41-UP)

Vibratory Soil Compactor

CP44B (S/N: 4P4227-UP; GNB1-UP)

CP54B (S/N: P54170-UP)

CP56B (S/N: 485110-UP; P56279-279,281-282,323-UP; M5P131-UP)

CS44B (S/N: CS31-1,343-397,401-425,427-430,432-UP; 4G3112-UP)

CS54B (S/N: 482159-UP; G54200-UP; 5M4141-UP; CS5447-UP; M5B799-UP)

CS56B (S/N: 484154-UP; S56342-342,346-346,368-368,426-426,428-UP; M4M262-UP)

CS64B (S/N: CW6108-108,118-UP; TF6105-UP; 486154-UP)

CS66B (S/N: 487200-UP)

CS68B (S/N: 488125-UP; MBF122-UP)

CS74B (S/N: 490130-UP; 441105-UP; CS4114-UP; E7E217-UP)

CS76B (S/N: 492108-UP)

CS78B (S/N: 493132-UP; M78106-UP; M8M313-UP)

CS79B (S/N: CM7103-UP; C79141-UP)

Wheel Dozer

824K (S/N: RWB124-UP)

834K (S/N: LWY728-UP)

844K (S/N: M4R1-UP; KLS407-UP; K4Y1-UP)

854K (S/N: KK3204-UP; RM31-UP; KK61-UP; RM61-UP)

Wheel Feller Buncher

2570D (S/N: D25108-UP)

2670D (S/N: D26206-UP)

563D (S/N: D63113-UP)

573D (S/N: D73206-UP)

Wheel Loader

924K (S/N: KW4425-490,1103-UP; SNZ600-UP)

926M (S/N: LTE3028-3028,3030-3030,3032-3033,3502-3504,3506-3511,3513-UP)

930K (S/N: FRK515-UP; P3K242-UP; TNY73-UP)

930M (S/N: KTG2333-2334,2336-2336,3001-3005,3007-3012,3014-UP; HEY260-UP)

938K (S/N: W8K348-424,900-UP; REP750-UP)

938M (S/N: J3R3282-3282,3284-3284,3286-3286,3288-3288,3290-3291,3293-3294,3652-3656,3658-3658,3660-3661,3663-3664,3666-3674,3676-3680,3682-4067,4069-UP)

950 GC (S/N: M5K1254-1255,1260-1260,1275-1275,1280-1401,1403-1411,1413-1413,1418-1421,1425-1426,1429-1430,1433-1436,1439-UP; M5T309-311,313-320,326-349,357-UP)

950L (S/N: TNS274-UP; LXX10201-10201,10203-10210,10224-UP)

950M (S/N: EMB3853-UP; ENE10215-10215,10217-10217,10219-10228,10285-UP; XCJ10101-10107,10112-10112,10114-10119,10121-10121,10123-10124,10131-10132,10134-10134,10136-10202,10204-UP; FTR1218-UP; J1S383-UP)

950M Z (S/N: HE810250-10250,10252-10252,10254-10254,10256-10256,10258-10258,10260-10260,10277-UP)

962L (S/N: MTN282-UP; SXS10201-UP)

962M (S/N: EJB945-UP; JYD10108-10114,10120-10154,10182-UP; LSE10215-UP; J2S118-UP; F2T621-UP)

962M Z (S/N: SA810251-UP)

966H (S/N: FMW552-UP)

966L (S/N: FSL10204-10204,10222-10222,10224-10227,10230-UP; FRS1174-UP)

966M (S/N: EJA1533-UP; DYC1387-UP; R8D1-1,1202-UP; LMM10228-UP; KJP2568-UP; L8R10207-UP)

966M Series XE (S/N: P6C1121-UP; B8P412-UP)

972L (S/N: RFB1076-UP; YJW1-UP)

972M (S/N: L8E1211-UP; LSJ1584-UP; GGN10212-UP; A8P1540-1606,1608-UP; JPR960-UP; M8W10202-10205,10207-UP)

972M Series XE (S/N: M5S222-UP; EDW902-UP)

980K (S/N: GTZ76001-UP)

980L (S/N: D8Z10238-10238,10240-10245,10247-10257,10259-10260,10266-10269,10271-10271,10273-10273,10276-UP)

980M (S/N: MK21-10227,10231-10233,10235-10236,10239-UP; MGD10232-10266,10276-UP; KRS2714-UP; N8T896-UP)

982M (S/N: MK61-UP; F9A418-UP; LRS10118-UP; K1Y1620-UP)

988K (S/N: LWX754-UP; TWX1170-UP)

988K XE (S/N: EWX1-UP)

990K (S/N: DJK258-UP; A9P375-UP; M9P1-UP; K9X1-UP)

992K (S/N: KK2115-UP; RM21-UP; KK41-UP; RM51-UP)

993K (S/N: Z4D702-UP; Z8D1-UP; Z4Z703-UP; Z8Z1-UP)

Wheel Skidder

525D (S/N: 2L5163-UP; GKP472-UP)

535D (S/N: 3L5138-UP; MTP381-UP)

545D (S/N: 4L5171-UP; KGP252-UP)

555D (S/N: 5L5116-UP; PGY151-UP)

Wheel Tractor-Scraper

621G (S/N: NEL478-UP)

621K (S/N: WTA119-UP; WTE123-UP; WTP114-UP)

623K (S/N: WTB236-UP; WTM111-UP)

627K (S/N: WTC268-UP; WTN114-UP)

631K (S/N: WT41-UP; WTR103-UP)

637K (S/N: WTS113-UP)

657G (S/N: W1C355-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

The HVAC water valve actuator may be defective on the machines listed in this publication. If the actuator is defective, the operator may experience intermittent temperature control from the HVAC system.

The actuators are used to drive the water valve for the cab heating system. The issue with the actuator is a worm drive gear inside is not formed correctly and can cause the actuator to not function properly, especially when the water valve it drives is exposed to higher machine cooling system pressure and flow.

There are two affected actuators:

• 279-0850 Actuator

• 265-9620 Actuator

Solution

Note: The actuator will be attached to the water valve for the cab heating system. The location of this actuator will therefore be on the cab. Look for the actuator in the coolant line circuit on the cab.

The actuators have a build date included on the label that will help identify a good part from a bad part.

If the actuator is determined to be bad through the build date, the actuator must be replaced.

• BAD = Build Date 01 January 2017to 01 March 2017

• GOOD = Build date Before01 January 2017and After 01 March 2017

Illustration 1	g06206481
Typical example of a label on an actuator (A) Build Date

Illustration 2	g06206489
Typical view of an actuator (B) Fastener

Note: In some instances the label on the actuator may be difficult to read. If the label is difficult to read, the actuator must be removed to read the label. Typically the actuator is removed by loosening three fasteners (B) as shown in Illustration 2. The torque on fasteners (B) is 1.7 N·m (15 lb in).

Replacing an Actuator

Follow the instruction shown below for a description of the necessary position of the water valve adapter when installing the new actuator.

Illustration 3	g06206519
(C) Actuator mounting points (D) 'Mid' Position (E) Adapter bushing

The actuator drive will arrive in the position shown in Illustration 3. You can manually adjust the position of the valve adapter to match Mid Position (D). The position does not have to be exact.

Note: Ensure that adapter bushing (E) stays with the valve.

Water Valve Removal

If the actuator cannot easily be removed from the water valve assembly due to its location or orientation in the cab, you may have to remove the entire water valve assembly. Removing the entire water valve assembly is not the preferred method.

1. Disconnect the water valve assembly from the electrical connector.

2. Disconnect hoses.

3. Remove and retain bolts, nuts, and washers for use during the installation procedure.

4. Replace the Actuator with new part.

5. Install water valve assembly using the procedure below.

   1. Remove the heater hose and clean the surface of the formed tube.
      Show/hide table

      Illustration 4	g06206524
      (AA) 25.4 mm (1.00 inch)

   2. Reinstall the heater hose to the formed tube with dimensions (A) from bead to hose end. Refer to Illustration 4.

   3. Inspect the hose clamp for damage and replace as needed.
      Show/hide table

      Illustration 5	g06206541
      (AB) 5.00 mm (0.197 inch)

   4. Position the hose clamp to the correct distance from the hose bead. The distance from the end of the hose clamp closest to the hose bead should be dimension (AB). Refer to Illustration 5.

   5. For the hose clamps, torque the clamp to the recommended 7.5 ± 1 N·m (66.38 ± 8.85 lb in).

      Note: Use of a manual torque wrench is preferred to attain 7.5 ± 1 N·m (66.38 ± 8.85 lb in). If an automatic torque gun is used, the torque gun must be an electric direct drive type (not clutch type).

      Note: Do not use a pneumatic torque tool. Ensure that RPM of the electric direct drive tool is between 60 and 200 (RPM greater than 200 can damage clamps and will result in improper torque readings).