John Deere約翰迪爾強鹿柴油機氣缸體、襯套、活塞和連桿維修技術規范

Item Measurement Specification

Piston Rings—4045DF, TF150 and

6068DF, TF150 Engines

No. 1 Compression End Gap 0.33—0.58 mm (0.013—0.023 in.)

No. 2 Compression End Gap 1.24—1.49 mm (0.049—0.059 in.)

No. 3 Oil Control End Gap 0.30—0.56 mm (0.011—0.022 in.)

Piston Rings—4045TF250 and

6068TF250 Engines

No. 1 Compression End Gap 0.33—0.64 mm (0.013—0.025 in.)

No. 2 Compression End Gap 0.75—1.00 mm (0.030—0.039 in.)

No. 3 Oil Control End Gap 0.33—0.64 mm (0.013—0.025 in.)

Heavy Duty Piston Rings

No. 1 Compression End Gap 0.33—0.59 mm (0.013—0.023 in.)

No. 2 Compression End Gap 0.89—1.14 mm (0.035—0.049 in.)

No. 3 Oil Control End Gap 0.33—0.59 mm (0.013—0.023 in.)

Cylinder Liner Height above Block 0.030—0.100 mm

(0.001—0.004 in.)

Maximum Permissible Difference 0.05 mm (0.002 in.)

between Readings within One

Cylinder or between Adjacent

Cylinders

Cylinder Liner Thickness 6.23—6.89 mm

(0.25—0.27 in.)

Cylinder Liner Packing Step Dimension 2.02—2.29 mm

(0.08—0.09 in.)

Item Measurement Specification

Piston Ring-to-Groove Clearance— Maximum Clearance 0.20 mm (0.008 in.)

New Piston Ring (Second

Compression Ring Groove)

Piston Ring-to-Groove Clearance— Maximum Clearance 0.82 mm (0.032 in.)

New Piston Ring (Third Oil Control

Ring Groove, Standard Ring)

Piston Ring-to-Groove Clearance— Maximum Clearance 0.15 mm (0.006 in.)

New Piston Ring (Third Oil Control

Ring Groove, Heavy Duty Ring)

Piston Pin Bore (Small Pin) ID 34.935—34.945 mm

(1.3754—1.3758 in.)

Piston Pin Bore (Large Pin) ID 41.285—41.295 mm

(1.6254—1.6258 in.)

Piston Skirt (Measurement Taken at Diameter 106.38—106.40 mm

Bottom of Skirt 28 mm [1.1 in.] from (4.188—4.189 in.)

Bottom of Piston)

Piston (Two Valve Head Engines)

Piston Height (Measured from Center of Pin 71.64—71.70 mm

Bore to Top of Piston) (2.820—2.823 in.)

Piston (Four Valve Head Engines)

Piston Height (Measured from Center of Pin 71.60—71.65 mm

Bore to Top of Piston) (2.819—2.820 in.)

Piston Skirt OD 28 mm (1.1 in.) from Bottom of 106.38—106.40 mm (4.188—4.189

Piston in.)

Cylinder Liner ID 106.48—106.52 mm (4.192—4.194

in.)

Cylinder Liner (Top or Bottom) Maximum Out-of-Round 0.05 mm (0.002 in.)

Cylinder Liner Maximum Taper 0.05 mm (0.002 in.)

Piston-to-Liner Clearance (Measured Clearance 0.08—0.14 mm

at Bottom of Piston Skirt) (Naturally (0.003—0.005 in.)

Measurement Specification

Piston-to-Liner Clearance (Measured Clearance 0.08—0.15 mm

at Bottom of Piston Skirt) (0.003—0.006 in.)

(Turbocharged Engines)

Crankshaft Journal OD 77.800—77.826 mm

(3.0629—3.0640 in.)

Assembled Rod Bearing ID 77.876—77.927 mm

(3.0659—3.0679 in.)

Connecting Rod Bearing-to-Journal Oil Clearance 0.050—0.127 mm

(New Parts) (0.0020—0.0050 in.)

Wear Limit 0.152 mm (0.0600 in.)

Connecting Rod Bore (Without ID 82.677—82.703 mm

Bearing Inserts) (3.2550—3.2560 in.)

Connecting Rod Bore Maximum Permissible Out-of-Round 0.038 mm (0.0015 in.)

Piston Pin (Small) OD 34.920—34.930 mm

(1.3748—1.3752 in.)

Wear Limit 34.907 mm (1.3743 in.)

Piston Pin (Large) OD 41.270—41.280 mm

(1.6248—1.6252 in.)

Wear Limit 41.257 mm (1.6243 in.)

Piston Pin Length 71.51—72.11 mm

(2.815—2.839 in.)

Piston Pin Bushing Installed (Small ID 34.950—34.976 mm

Pin) (1.3760—1.3770 in.)

Wear Limit 35.026 mm (1.3790 in.)

Piston Pin Bushing Installed (Large ID 41.300—41.326 mm

Pin) (1.6260—1.6270 in.)

Wear Limit 41.376 mm (1.6290 in.)

Piston Pin-to-Bushing Oil Clearance 0.020—0.056 mm

(0.0008—0.0022 in.)

Wear Limit 0.102 mm (0.0040 in.)

Connecting Rod Small Pin Bore ID 38.087—38.113 mm

(Bushing Removed) (1.4995—1.5005 in.)

Item Measurement Specification

Connecting Rod Large Pin Bore ID 46.025—46.051 mm

(Bushing Removed) (1.8120—1.8130 in.)

Connecting Rod Pin-to-Bushing Oil Clearance 0.020—0.056 mm

(Tapered Pin-End) (0.0008—0.0022 in.)

Connecting Rod Pin-to-Bushing Oil Clearance 0.020—0.056 mm

(Straight Pin-End) (0.0008—0.0022 in.)

Wear Limit 0.102 mm (0.0040 in.)

Rod Bearing Bore-to-Piston Pin Measurement 202.95—203.05 mm

Bushing Bore (Center-to-Center) (7.990—7.994 in.)

Cylinder Block Oil and Coolant

Gallery Plugs

1/2 in. Plug (W/O Turbocharger, Torque 45 N•m (33 lb-ft)

Return Port)

1/4 in. Plug (Coolant Gallery) Torque 17 N•m (13 lb-ft)

1/8 in. Plug (Oil Gallery) Torque 17 N•m (13 lb-ft)

3/8 in. Plug (Oil Gallery) Torque 45 N•m (33 lb-ft)

1-5/8 in. Steel Plug (Coolant Torque 60 N•M (44 lb-ft)

Gallery)1

1-5/8 in. Composite Plug (Coolant Torque 30 N•m (22 lb-ft)

Gallery)2

1-5/8 in. Steel Square Socket Torque 35 N•m (26 lb-ft)

Head Plug (Coolant Gallery)

Cylinder Block Main Bearing Bore ID 84.455—84.481 mm

(3.3250—3.3260 in.)

Camshaft Follower Bore in Block ID 31.70—31.75 mm

(1.248—1.250 in.)

Item Measurement Specification

Camshaft Follower (New) OD 31.61—31.64 mm

(1.245—1.246 in.)

Camshaft Follower-to-Bore Clearance 0.06—0.13 mm

(0.002—0.005 in.)

Camshaft Bore in Block, Front No. 1 ID 59.961—59.987 mm

(Without Bushing) (2.3607—2.3617 in.)

Camshaft Bore in Block, Front No. 1 ID 55.961—55.987 mm

(With Bushing) (2.2031—2.2042 in.)

Camshaft Bore in Block (All Except ID 55.986—56.012 mm

No. 1) (2.2042—2.2052 in.)

Camshaft Journal-to-Bushing (No. 1 Oil Clearance 0.063—0.115 mm

Bore With Bushing) (0.0025—0.0045 in.)

Camshaft Journal-to-Bushing (All Oil Clearance 0.088—0.140 mm

Except No. 1) (0.0035—0.0055 in.)

Balancer Shaft Bore in Block ID 43.262—43.288 mm

(Bushing Removed) (1.7032—1.7042 in.)

Balancer Shaft Bushing ID 40.177—40.237 mm

(1.5818—1.5841 in.)

Balancer Shaft Journal-to-Bushing Clearance 0.016—0.102 mm

(0.0006—0.0040 in.)

Lower Block Bore for Seating Liner ID 115.75—115.80 mm

(4.557—4.559 in.)

Upper Block Bore for Seating Liner ID 120.70—120.75 mm

(4.752—4.754 in.)

Liner Flange in Block ID 126.33—126.35 mm

(4.973—4.974 in.)

Liner at Upper Bore OD 120.61—120.69 mm

(4.7484—4.7516 in.)

Liner-to-Cylinder Block Clearance at Lower Bore 0.035—0.100 mm

(0.001—0.004 in.)

Item Measurement Specification

Liner-to-Cylinder Block Clearance at Upper Bore 0.10—0.14 mm

(0.004—0.005 in.)

Cylinder Liner ID 106.48—106.52 mm

(4.192—4.194 in.)

Cylinder Maximum Wear 0.10 mm (0.004 in.)

Cylinder Maximum Taper 0.05 mm (0.002 in.)

Cylinder Maximum Out-of-Round 0.05 mm (0.002 in.)

Cylinder Liner Flange Counterbore Depth in Block 5.952—5.988 mm

(0.2343—0.2357 in.)

Cylinder Liner Flange Thickness 6.022—6.058 mm

(0.2371—0.2385 in.)

Cylinder Block Top Deck

Maximum Acceptable Out-of-Flat, Measurement 0.08 mm (0.003 in.)

Entire Length or Width (Used)

Maximum Acceptable Out-of-Flat Measurement 0.025 mm (0.001 in.)

(Any 150 mm [5.90 in.] Length)

Top Deck (Surface Grind Only) Surface Finish 0.8—3.2 micrometers

(AA) (32—125 micro-in.)

Top Deck Surface Finish Maximum Wave Depth 0.012 mm (0.0005 in.)

Main Bearing Bore Distance 337.896—337.972 mm

Centerline-to-Cylinder Block Top (13.3029—13.3059 in.)

Deck

Piston Cooling Orifice Jet Diameter 1.4 mm (0.055 in.)

Piston Cooling Orifice Torque 11 ± 1.5 N•m (96 ± 13 lb-in.)

Push Rod OD 9.891—9.917 mm

(0.3894—0.3904 in.)

Push Rod Bore in Block ID 10.00—10.05 mm

(0.3937—0.3957 in.)

Item Measurement Specification

Cylinder Liner Height above Block 0.030—0.100 mm

(0.001—0.004 in.)

Maximum Permissible Height 0.05 mm (0.002 in.)

Difference at Nearest Point of Two

Adjacent Liners, or Within a Single

Liner

Connecting Rod Cap Screws Initial Torque 58 N•m (43 lb-ft)

Connecting Rod Cap Screws Torque-Turn 1/4 Turn (90—100°)

After Initial Torque

Piston Protrusion

4-Cyl. Standard Duty Piston Protrusion 0.08—0.31 mm

Codes 4801, 4803, 4809. (0.003—0.012 in.)

6-Cyl. Standard Duty

Codes 4805, 4807.

4-Cyl. Heavy Duty Piston Protrusion 0.08—0.25 mm

Code 4804. (0.003—0.010 in.)

6-Cyl. Heavy Duty

Codes 4808, 4810 and All

Four-Valve Head Engines.