John Deere約翰迪爾強鹿柴油機節(jié)溫器的拆卸與水泵的檢查與標準值參數(shù)

Remove and Install Coolant

Manifold/Thermostat Cover and Thermostat

(High Flow Single Thermostat)

CAUTION: Explosive release of fluids from

pressurized cooling system can cause serious

burns. Do not drain coolant until coolant

temperature is below operating temperature.

Always loosen cooling system filler cap,

radiator cap, or drain valve slowly to relieve

pressure.

1. Partially drain coolant from system.

A—Seal F—Thermostat Cover H—Cap Screw (M10 x 70) J—Seal

B—Coolant Manifold G—Cap Screw (M10 x 90) Thermostat K—Coolant

C—Seal Thermostat Cover-to-Coolant Manifold Manifold-to-Coolant Pump

D—Thermostat Cover-to-Coolant I—Cap Screw (M10 x 25) Tube

E—Jiggle Pin Manifold-to-Cylinder Head Thermostat

Cover-to-Coolant Manifold

2. Remove coolant manifold-to-coolant pump tube (K)

and seal (J).

3. Visually inspect area around coolant

manifold/thermostat cover for leaks.

4. Remove cap screws (G) and remove coolant

manifold/thermostat cover assembly with gasket.

5. Remove thermostat cover (F) and thermostat (D).

6. Remove and discard all gasket material. Clean

gasket surfaces.

7. Clean and inspect cover for cracks or damage.

NOTE: Thermostat must be installed with jiggle pin (E)

facing up in the 12 o’clock position.

8. Install thermostat (D), cover (F) and seal (C) on

coolant manifold. Hand tighten cover cap screws

(H) and (I).

9. Install coolant manifold/thermostat cover assembly

on engine using cap screws (G). Tighten all cap

screws to specifications.

Specification

Thermostat Cover-to-Coolant

Manifold Cap Screws (H and I)

(High Flow Single

Thermostat)—Torque................................................ 30 N•m (22 lb-ft)

Coolant Manifold-to-Cylinder

Head Cap Screws (G) (High

Flow Single Thermostat)—

Torque....................................................................... 35 N•m (26 lb-ft)

10. Install new seal (J) and tube (K). Tighten tube

clamps securely.

11. Fill cooling system and check for leaks.

IMPORTANT: Air must be expelled from cooling

system when filling. Loosen

temperature sending unit fitting at

rear of cylinder head or plug in

thermostat housing to allow air to

escape when filling system. Tighten

fitting or plug when all air has been

expelled.

Remove and Install Coolant Manifold and Thermostats (Dual Thermostats)

A—Tube D—Coolant Manifold G—Thermostat (Upper) J—Cap Screw (3 used)

B—Gasket E—Gasket H—Thermostat (Lower) K—Seal

C—Cap Screw (2 used) F—Jiggle Pin I—Cover

CAUTION: Explosive release of fluids from

pressurized cooling system can cause

serious burns. Do not drain coolant until the

coolant temperature is below operating

temperature. Always loosen cooling system

filler cap, radiator cap, or drain valve slowly

to relieve pressure.

NOTE: Configuration of coolant manifold/dual

thermostat assembly varies by engine

application.

1. Partially drain coolant from system.

2. Remove coolant manifold-to-coolant pump tube (A)

and seal (K).

3. Remove parts (E—J).

4. Remove coolant manifold (D) and gasket (B).

5. Discard all gasket material and clean mating

surfaces.

6. Clean and inspect manifold and cover for cracks

and damage.

NOTE: On vertical mounted manifolds (shown above),

lower thermostat (H) must be installed with

jiggle pin (F) facing up in the 12 o’clock

position. Ensure upper and lower thermostats

(G and H) are installed as shown in drawing.

The larger (blocking) thermostat (G) is installed

in the upper bore, while the smaller

(non-blocking) thermostat (H) is installed in the

lower bore.

7. Install parts (B—J).

8. Lubricate O-ring with PT507 Multi-Purpose Grease

and install seal (K) and tube (A).

IMPORTANT: Air must be expelled from cooling

system when filling. Loosen

temperature sending unit fitting at

rear of cylinder head or plug in

thermostat housing to allow air to

escape when filling system. Tighten

fitting or plug when all air has been

expelled.

Remove and Install Coolant Manifold, Thermostats and Side Port (Four-Valve Head)

A—Tube E—Gasket I—Coolant Manifold M—Blocking Thermostat

B—Gasket F—Side Port J—Gasket (Lower)

C—O-Ring G—Cap Screw (2used) K—Seal N—Cap Screw (3 used)

D—Coolant Tube H—Cap Screw (3 used) L—Thermostat (Upper) O—Thermostat Cover

CAUTION: Explosive release of fluids from

pressurized cooling system can cause

serious burns. Do not drain coolant until the

coolant temperature is below operating

temperature. Always loosen cooling system

filler cap, radiator cap, or drain valve slowly

to relieve pressure.

1. Properly drain coolant from system.

2. Remove cap screws (G), side port (F), gasket (E)

and coolant tube (D).

3. Remove cap screws (N), thermostat cover (O) and

gasket (J).

4. Remove cap screws (H), coolant manifold (I) and

gasket (B).

5. Discard seal (K) and O-rings (C).

6. Discard all gasket material and clean mating

surfaces.

7. Clean and inspect manifold, cover, side port and

coolant tube for cracks and damage. Replace as

necessary.

8. Lubricate new seal (K) and tube (A) with petroleum

jelly. Install seal in coolant manifold.

9. Install new gasket (B), coolant manifold (I) and cap

screws (H). Tighten cap screws to specifications.

Specification

Coolant Manifold-to-Cylinder

Head Cap Screws (Four-Valve

Head)—Torque ......................................................... 70 N•m (52 lb-ft)

NOTE: Ensure upper and lower thermostats (L and M)

are installed as shown in drawing. The

blocking thermostat (M) is installed in the lower

bore, while the non-blocking thermostat (L) is

installed in the upper bore.

10. Install thermostats (L and K).

11. Install new gasket (J), thermostat cover (O) and

cap screws (N). Tighten cap screws to

specifications.

Specification

Coolant Manifold

Cover-to-Coolant Manifold Cap

Screws (Four-Valve Head)—

Torque....................................................................... 47 N•m (35 lb-ft)

12. Lubricate new O-rings (C) with petroleum jelly.

13. Install coolant tube (D), new gasket (E), side port

(F) and cap screws (G). Tighten cap screws to

specifications.

Specification

Side Port-to-Cylinder Head Cap

Screws (Four-Valve Head)—

Torque....................................................................... 70 N•m (52 lb-ft)

IMPORTANT: Air must be expelled from cooling

system when filling. Loosen

temperature sending unit fitting in

thermostat housing or plug at rear of

cylinder head to allow air to escape

when filling system. Tighten fitting

or plug when all air has been

expelled.

Test Thermostat(s)

Inspect thermostat(s) for debris or damage, and test each

thermostat using an approved testing procedure. (See

INSPECT THERMOSTAT AND TEST OPENING

TEMPERATURE in Section 04, Group 150 for testing

procedure and specifications.)

NOTE: Deaeration is accomplished by a jiggle pin or

groove in thermostat flange area (positioned at

top).

John Deere約翰迪爾強鹿柴油機冷卻液水泵的拆卸

CAUTION: Explosive release of fluids from

pressurized cooling system can cause serious

burns. Do not drain coolant until the coolant

temperature is below operating temperature.

Always loosen cooling system filler cap,

radiator cap, or drain valve slowly to relieve

pressure.

IMPORTANT: Whenever the aluminum timing gear

cover or coolant pump is replaced, the

cooling system must be flushed and

serviced, regardless of time/hours since

last coolant change. See FLUSH AND

SERVICE COOLING SYSTEM in Section

01, Group 002. Ensure system,

including radiator, is completely

drained.

On engines without coolant pump

inserts, a coolant pump insert must be

installed before installing coolant pump.

1. Drain coolant.

2. Remove fan (shown removed).

3. Release tension on belt (A) using a breaker bar and

socket.

4. Remove poly-vee belt from pulleys.

5. Remove thermostat housing-to-coolant pump tube (B).

6. Remove coolant pump inlet elbow (C) and O-ring, if

desired.

7. Remove coolant pump (D).

8. Remove coolant pump insert (E), if equipped.

9. Remove pulley from coolant pump.

10. Clean mating surfaces of pump, insert and timing

Coolant Pump Assembly

A—Gasket C—Seal E—Bearing G—Shaft

B—Impeller D—Housing F—Internal Snap Ring H—External Snap Ring

Disassemble Coolant Pump

A—Impeller

B—Seal

C—Shaft

1. Using appropriate snap ring pliers, remove internal

snap ring from front bore of pump housing.

IMPORTANT: If plastic impeller breaks while pressing

shaft through impeller, remove brass

bushing from shaft before pressing

shaft through rest of housing. Use a

knife-edge puller to remove bushing.

2. Support nose of coolant pump housing and press shaft

through impeller (A) until impeller is free from shaft and

bearing/shaft assembly is removed from housing.

Discard impeller.

3. Using the appropriate driver from D01045AA Bushing,

Bearing and Seal Driver Set, drive or press seal (B)

from pump housing.

4. Support inner bearing race and press shaft (C) out of

bearing. Discard bearing.

檢查、清潔和測量冷卻水泵

1. Inspect coolant pump housing (A) for cracks or

damage.

2. Remove gasket material from housing and clean with

solvent. Dry with compressed air.

3. Inspect parts for wear or damage.

Specification

Coolant Pump Impeller Bore—ID 11.973—11.999 mm

(0.4714—0.4724 in.)

..............................

Coolant Pump Bearing Shaft

(Impeller End)—OD 12.025—12.038 mm

(0.4734—0.4739 in.)

...................................................

Coolant Pump Bearing Shaft

(Pulley End)—OD 39.997—40.013 mm

(1.5747—1.5753 in.)

......................................................

Coolant Pump Housing Bearing

Bore—ID 61.961—61.987 mm

(2.4394—2.4404 in.)

....................................................................

4. Remove foam filters and clean out weep holes in

housing. Inspect weep holes for oil or coolant leakage.

· Oil leakage indicates a damaged sealed bearing (B).

· Coolant leakage indicates a damaged housing seal

(F).

Assemble Coolant Pump

1. Thoroughly clean and inspect coolant pump mounting

surface in timing gear cover before installing coolant

pump assembly.

2. Using appropriate snap ring pliers, install external snap

ring (C) into groove in shaft (B).

3. Using appropriate driver which bears on inner bearing

race, install bearing (A) onto shaft against snap ring.

IMPORTANT: Do not push against end of bearing

shaft. Push against outer race only,

when installing bearing and shaft

assembly into housing.

4. Using JDG956 Coolant Pump Bearing Installer (D),

install bearing and shaft assembly into housing until it

bottoms in housing bore.

5. Install large internal snap ring into groove in front bore

of pump housing.

NOTE: Coolant pumps have a unitized (one-piece)

coolant seal.

6. Using seal installation tool (F) provided in seal kit,

install seal (E) (dry) onto coolant pump shaft and into

housing until it is firmly seated. Ensure metal cup side

of seal faces inward (toward impeller).

A—Bearing

B—Shaft

C—Snap Ring

D—JDG956 Coolant Pump Bearing Installer

E—Seal

F—Seal Installation Tool

NOTE: Coolant pumps are available with two different

types of impellers to ensure adequate coolant flow

for a given engine application. Standard flow

pumps have fins on both sides of impeller (A).

High flow pumps have fins on one side of impeller

(B). Be sure to replace impeller with the same

type of impeller to ensure proper engine cooling.

7. Support front nose of coolant pump shaft.

IMPORTANT: When installing impeller, press only on

brass bushing (C), as impeller could

crack.

8. Using an appropriate driver, install impeller onto shaft

to the specified dimension below.

Specification

Coolant Pump Impeller (Standard

Flow)—Position 2.17—2.29 mm (0.085—0.090 in.)

below end of shaft

....................................

Coolant Pump Impeller (High

Flow)—Position Flush ± 0.13 mm (0.005 in.) with

end of shaft

.......................................

9. Rotate impeller a complete revolution by hand and

check with feeler gauge for housing-to-impeller

clearance.

Specification

Coolant Pump

Housing-to-Impeller—Minimum

Clearance ................................................................... 0.27 mm (0.010 in.)

10. Install new foam filters in weep holes.

Install Coolant Pump

A

A—Sealant

B—Pulley

C—Coolant Pump

D—Coolant Pump Insert

IMPORTANT: On engines without coolant pump

inserts, a coolant pump insert must be

installed before installing coolant pump.

Instructions for installation of insert on

early timing gear covers are supplied

with inserts.

1. Install pulley (B) onto coolant pump (C). Tighten cap

screws to specifications.

Specification

Coolant Pump Pulley Cap

Screws—Torque.............................................................. 15 N•m (11 lb-ft)

NOTE: If installing a new coolant pump and insert kit,

proper sealant is supplied with kit.

Coolant pump hardware will pull/squeeze the

insert onto the timing gear cover.

2. Insure that all mating surfaces are clean. Apply three

2.0 mm—4.0 mm (0.080—0.157 in.) beads of

LOCTITEâ 5699 RTV Silicone Flange Sealant (A) to

coolant pump cavity in timing gear cover and install

coolant pump insert (D). Make sure holes in insert are

aligned with holes in timing gear cover.

3. Using a new gasket, install coolant pump (C) over

coolant pump insert (D). Install cap screws through

coolant pump and coolant pump insert and into the

timing gear cover. Tighten cap screws to specifications.

Specification

Coolant Pump-to-Timing Cover

Cap Screws—Torque ...................................................... 16 N•m (12 lb-ft)

4. Using a new O-ring, install coolant pump inlet elbow

(C), if removed. Tighten cap screws to specifications.

Specification

Coolant Pump Inlet Elbow Cap

Screws—Torque.............................................................. 35 N•m (26 lb-ft)

5. Install poly-vee belt. Be sure that belt is correctly

seated in all pulley grooves.

6. Install fan and tighten cap screws with lock washers to

the following specification:

Specification

Fan-to-Pulley Hub M8 Cap

Screws—Torque.............................................................. 35 N•m (26 lb-ft)

Fan-to-Pulley Hub M10 Cap

Screws—Torque.............................................................. 70 N•m (52 lb-ft)

7. Fill cooling system with proper coolant. (See Section

01, Group 002.)

IMPORTANT: Air must be expelled from cooling

system when refilled. Loosen

temperature sending unit fitting at rear

of cylinder head or plug in thermostat

housing to allow air to escape when

filling system. Tighten fitting or plug

when all the air has been expelled.

Cooling System Deaeration

A—Coolant Temperature Sensor

Deaeration is normally accomplished by the jiggle pin in

the thermostat flange. However, a pocket of air can stay

on the top rear of the engine. When refilling the cooling

system, loosen the coolant temperature sensor (A) or plug

at the rear of the cylinder head to allow air to escape.