Nissan Armada 2025-2026 Service and Repair Manual: CylinderBlock
CYLINDER BLOCK
Unit: mm (in)
| ||||
| Surface flatness | Standard | Less than 0.03 (0.0012) | ||
| Limit | 0.1 (0.004) | |||
| Main bearing housing inner diameter | Standard | 69.993 - 70.017 (2.7556 - 2.7566) | ||
| Cylinder bore | Inner diameter | Standard | 86.000 - 86.015 (3.3858 - 3.3864) | |
| Wear limit | 0.2 (0.008) | |||
| Out-of-round | Limit | 0.015 (0.0006) | ||
| Taper | 0.010 (0.0004) | |||
| Main bearing housing inner diameter grade (Without bearing) | Grade No. A Grade No. B Grade No. C Grade No. D Grade No. E Grade No. F Grade No. G Grade No. H Grade No. J Grade No. K Grade No. L Grade No. M Grade No. N Grade No. P Grade No. R Grade No. S Grade No. T Grade No. U Grade No. V Grade No. W Grade No. X Grade No. Y Grade No. 4 | 79.993 - 79.994 (3.1493 - 3.1494) 79.994 - 79.995 (3.1494 - 3.1494) 79.995 - 79.996 (3.1494 - 3.1494) 79.996 - 79.997 (3.1494 - 3.1495) 79.997 - 79.998 (3.1495 - 3.1495) 79.998 - 79.999 (3.1495 - 3.1496) 79.999 - 80.000 (3.1496 - 3.1496) 80.000 - 80.001 (3.1496 - 3.1496) 80.001 - 80.002 (3.1496 - 3.1497) 80.002 - 80.003 (3.1497 - 3.1497) 80.003 - 80.004 (3.1497 - 3.1498) 80.004 - 80.005 (3.1498 - 3.1498) 80.005 - 80.006 (3.1498 - 3.1498) 80.006 - 80.007 (3.1498 - 3.1499) 80.007 - 80.008 (3.1499 - 3.1499) 80.008 - 80.009 (3.1499 - 3.1500) 80.009 - 80.010 (3.1500 - 3.1500) 80.010 - 80.011 (3.1500 - 3.1500) 80.011 - 80.012 (3.1500 - 3.1501) 80.012 - 80.013 (3.1501 - 3.1501) 80.013 - 80.014 (3.1501 - 3.1502) 80.014 - 80.015 (3.1502 - 3.1502) 80.015 - 80.016 (3.1502 - 3.1502) | ||
| Difference in inner diameter between cylinders | Standard | Less than 0.03 (0.0012) | ||
AVAILABLE PISTON
Unit: mm (in)
| |||
|---|---|---|---|
| Items | Standard | ||
| Piston skirt diameter “A” | 85.965 - 85.980 (3.3844 - 3.3850) | ||
| Items | Standard | Limit |
|---|---|---|
| “a” dimension | 39.00 (1.5354) | — |
| Piston pin hole diameter | 22.995 - 22.999 (0.9053 - 0.9055) | — |
| Piston to cylinder bore clearance | 0.020 - 0.050 (0.0008 - 0.0020) | 0.09 (0.0035) |
PISTON RING
Unit: mm (in)
| Items | Standard | Limit | |
|---|---|---|---|
| Side clearance | Top | 0.040 - 0.080 (0.0016 - 0.0031) | 0.11 (0.0043) |
| 2nd | 0.030 - 0.070 (0.0012 - 0.0028) | 0.10 (0.0039) | |
| Oil ring | 0.055 - 0.155 (0.0022 - 0.0061) | — | |
| End gap | Top | 0.23 - 0.28 (0.0091 - 0.0110) | 0.45 (0.0177) |
| 2nd | 0.38 - 0.48 (0.0150 - 0.0189) | 0.62 (0.0244) | |
| Oil (rail ring) | 0.17 - 0.42 (0.0067 - 0.0165) | 0.72 (0.0283) | |
PISTON PIN
Unit: mm (in)
| Items | Standard | Limit | |
|---|---|---|---|
| Piston pin outer diameter | 22.989 - 22.993 (0.9051 - 0.9052) | — | |
| Piston to piston pin oil clearance | 0.002 - 0.010 (0.0001 - 0.0004) | — | |
| Connecting rod bushing oil clearance | 0.007 - 0.017 (0.0003 - 0.0007) | 0.030 (0.0012) | |
CONNECTING ROD
Unit: mm (in)
| Items | Standard | Limit | |
|---|---|---|---|
| Center distance | 164.23 - 164.37 (6.47 - 6.47) | — | |
| Bend [per 100 (3.94)] | — | 0.15 (0.0059) | |
| Torsion [per 100 (3.94)] | — | 0.30 (0.0118) | |
| Connecting rod bushing inner diameter* | 23.000 - 23.006 (0.9055 - 0.9057) | — | |
| Connecting rod big end diameter (Without bearing) | Grade No. A | 59.000 - 59.001 (2.3228 - 2.3229) | — |
| Grade No. B | 59.001 - 59.002 (2.3229 - 2.3229) | — | |
| Grade No. C | 59.002 - 59.003 (2.3229 - 2.3229) | — | |
| Grade No. D | 59.003 - 59.004 (2.3229 - 2.3230) | — | |
| Grade No. E | 59.004 - 59.005 (2.3230 - 2.3230) | — | |
| Grade No. F | 59.005 - 59.006 (2.3230 - 2.3231) | — | |
| Grade No. G | 59.006 - 59.007 (2.3231 - 2.3231) | — | |
| Grade No. H | 59.007 - 59.008 (2.3231 - 2.3231) | — | |
| Grade No. J | 59.008 - 59.009 (2.3231 - 2.3232) | — | |
| Grade No. K | 59.009 - 59.010 (2.3232 - 2.3232) | — | |
| Grade No. L | 59.010 - 59.011 (2.3232 - 2.3233) | — | |
| Grade No. M | 59.011 - 59.012 (2.3233 - 2.3233) | — | |
| Grade No. N | 59.012 - 59.013 (2.3233 - 2.3233) | — | |
| Side clearance | 0.20 - 0.35 (0.0079 - 0.0138) | 0.35 (0.0138) | |
*: After installing in connecting rod
CRANKSHAFT
Unit: mm (in)
|
| ||
| Main journal diameter. “Dm” grade | Standard | Grade No. A Grade No. B Grade No. C Grade No. D Grade No. E Grade No. F Grade No. G Grade No. H Grade No. J Grade No. K Grade No. L Grade No. M Grade No. N Grade No. P Grade No. R Grade No. S Grade No. T Grade No. U Grade No. V Grade No. W Grade No. X Grade No. Y Grade No. 4 Grade No. 7 | 74.975 - 74.974 (2.9518 - 2.9517) 74.974 - 74.973 (2.9517 - 2.9517) 74.973 - 74.972 (2.9517 - 2.9516) 74.972 - 74.971 (2.9516 - 2.9516) 74.971 - 74.970 (2.9516 - 2.9516) 74.970 - 74.969 (2.9516 - 2.9515) 74.969 - 74.968 (2.9515 - 2.9515) 74.968 - 74.967 (2.9515 - 2.9515) 74.967 - 74.966 (2.9515 - 2.9514) 74.966 - 74.965 (2.9514 - 2.9514) 74.965 - 74.964 (2.9514 - 2.9513) 74.964 - 74.963 (2.9513 - 2.9513) 74.963 - 74.962 (2.9513 - 2.9513) 74.962 - 74.961 (2.9513 - 2.9512) 74.961 - 74.960 (2.9512 - 2.9512) 74.960 - 74.959 (2.9512 - 2.9511) 74.959 - 74.958 (2.9511 - 2.9511) 74.958 - 74.957 (2.9511 - 2.9511) 74.957 - 74.956 (2.9511 - 2.9510) 74.956 - 74.955 (2.9510 - 2.9510) 74.955 - 74.954 (2.9510 - 2.9509) 74.954 - 74.953 (2.9509 - 2.9509) 74.953 - 74.952 (2.9509 - 2.9509) 74.952 - 74.951 (2.9509 - 2.9508) |
| Pin journal diameter. “Dp” grade | Standard | Grade No. A | 55.974 - 55.973 (2.2037 - 2.2037) |
| Grade No. B | 55.973 - 55.972 (2.2037 - 2.2036) | ||
| Grade No. C | 55.972 - 55.971 (2.2036 - 2.2036) | ||
| Grade No. D | 55.971 - 55.970 (2.2036 - 2.2035) | ||
| Grade No. E | 55.970 - 55.969 (2.2035 - 2.2035) | ||
| Grade No. F | 55.969 - 55.968 (2.2035 - 2.2035) | ||
| Grade No. G | 55.968 - 55.967 (2.2035 - 2.2034) | ||
| Grade No. H | 55.967 - 55.966 (2.2034 - 2.2034) | ||
| Grade No. J | 55.966 - 55.965 (2.2034 - 2.2033) | ||
| Grade No. K | 55.965 - 55.964 (2.2033 - 2.2033) | ||
| Grade No. L | 55.964 - 55.963 (2.2033 - 2.2033) | ||
| Grade No. M | 55.963 - 55.962 (2.2033 - 2.2032) | ||
| Grade No. N | 55.962 - 55.961 (2.2032 - 2.2032) | ||
| Grade No. P | 55.961 - 55.960 (2.2032 - 2.2031) | ||
| Grade No. R | 55.960 - 55.959 (2.2031 - 2.2031) | ||
| Grade No. S | 55.959 - 55.958 (2.2031 - 2.2031) | ||
| Grade No. T | 55.958 - 55.957 (2.2031 - 2.2030) | ||
| Grade No. U | 55.957 - 55.956 (2.2030 - 2.2030) | ||
| Center distance “r” | 50.06 - 50.14 (1.9709 - 1.9740) | ||
| Taper (Difference between “A” and “B”) | Limit | 0.001 (0.0000393) | |
| Out-of-round (Difference between “X” and “Y”) | 0.0025 (0.0001) | ||
| Crankshaft runout [TIR*] | Standard | Less than 0.05 (0.0020) | |
| Limit | 0.05 (0.0020) | ||
| Crankshaft end play | Standard | 0.20 - 0.35 (0.0079 - 0.0138) | |
| Limit | 0.35 (0.0138) | ||
*: Total indicator reading
CylinderHead
CYLINDER HEAD
Unit: mm (in)
Items Standard Limit Head surface distortion Less than 0.03 (0.0012) 0.1 (0.004) Normal cylinder head height “H” 126.4 (4.98) —
VALVE DIMENSIONS
Unit: mm ( ...
Connecting Rod Bearing
CONNECTING ROD BEARING
Unit: mm (in)
Grade number Thickness Identification color (mark) 0 UPR 1.497 - 1.500 (0.0589 - 0.0591) Black LWR Black - Black 1 UPR 1.500 - 1.503 (0.0591 - 0.0592) ...
Other materials:
Exploded View
Idler pulley Alternator Drive belt auto-tensioner Crankshaft pulley A/C compressor Water pump Drive belt A/C compressor belt View Indicator Range when new drive belt is installed Possible use range Always replace after every disassembly. ...
Diagnosis Procedure
CHECK DTC
Check DTC for TCM. Refer to DTC Index.
Is the inspection result normal?
YES>>
GO TO 2.
NO>>
Repair or replace the malfunctioning parts.
CHECK DTC
Check DTC for BCM. Refer to DTC Index.
Is the inspection result normal?
YES>>
GO TO 3.
NO>>
Repair or replace the ma ...
Work Procedure
CAUTION:
When performing the following operations, always use CONSULT. (It cannot be performed by any means other than CONSULT.)
Connect external power supply and so on not to lower the 12 V battery voltage.
NOTE:
When replacing the electrical brake control unit, check the procedure for the title n ...
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