Nissan BD30T Valve Adjusting Procedure, Valve Lash, Valve Train Parts Specifications, Page 1 of 5 CYLINDER HEAD
, ~
!PJ9-11
(0.9-1.1,6.5.8.01
~
Adjusting screw
I
I Rocker cover
Nissan BD30T Rocker Cover Gasket Nissan BD30T Rocker Arm
Valve cotter
Valve Seals
r
Nissan BD30T Valve Springs
,
Lower seat
Cylinder head bolt Nissan BD30T Cylinder Head Bolts !PJ:
Refer to "CYLINDER
'0''''''''00
HEAD-
(Oo.V.hl". So,,;,,)".
Nissan Head Gasket Cylinder BD30T head gasket~ Cylinder head
Nissan BD30T Intake Valve
Nissan BD30T Exhaust Valve
~
Always replace when disassembled
Nissan BD30T Engine Parts Contact email: EngineParts@HeavyEquipmentRestorationParts.com !PJ N.m (kg.m, ft.lbl Phone: 269 673 1638 Website: www.HeavyEquipmentRestorationParts.com SEM693C
EM-12
Nissan BD30T Valve Adjusting Procedure, Valve Train Parts Specifications, Page 2 of 5 SERVICE DATA Valve AND Lash, SPECIFICATIONS
Inspection and Adjustment COMPRESSION PRESSURE Unit:
kPIl (bar, kg/em', psi)/rpm
Standard
2,942 (29.4,30,427)/200
Minimum
2,452 (24.5, 25, 356)/200
Valve guide Nissan BD30T Valve Guide Specifications Unit:
Standard
Valve guide outside diameter Differential limit between cylinders
CYLINDER
294 (2.9, 3, 43)/200
HEAD
Unit:
mm (in)
Limit Head surface distortion Nominal cylinder head height
Cylinder head valve guide hole diameter
0.2 (0.008) 89.7 (3.531)
VALVE
Unit:
Valve guide inner diameter (Finished size)
Interference fit of valve guide
12.033 • 12.044 (0.4737. 0.4742) 8.000 - 8.015 (0.3150 - 0.3156) 12.00 - 12.011 (0.4724 0.4729) 0.022.0.044 (0.0009 - 0.0017) Max. tolerance
Intake
0.02.0.05 (0.0008 0.0020)
0.15 (0.0059)
Exhaust
0.04.0.07 (0.0016. 0.0028)
0.20 (0.0079)
Stem to guide clearance
Valve deflection Iim it Intake
- L -
SEM188
0.30 (0.0118)
Exhaust
0.40 (0.0157)
Valve spring
Valve head diameter "0" IntakeValves Intake
43.5 (1.713)
Free length
Exhaust Exhaust Valves
38.0 (1.496)
Assembled height mm/N (mm/kg, in/lb)
Valve length "L" Intake
Out of square 117(4.61)
Exhaust Valve stem diameter "d" Intake
8.0 (0.315)
Exhaust
8.0 (0.315)
Valve seat angle "0/' Intake 45° Exhaust Valve margin "T" limit
1.0 (0.039)
Valve stem end surface grinding limit
0.2 (0.008)
Valve clearance (Hot)
IntakeIntake Valve Lash Clearance Exhaust Valve Lash Clearance Exhaust
Service
Standard
mm (in)
T (Margin thickness)
mm (in)
0.35 (0.0138)
EM-2
mm (in)
mm (in)
46.8 (1.843) 42.3/123.6 - 330.5 (42.3/12.6 - 33.7, 1.665/27.8 - 74.3) 2.0 (0.079)
Nissan BD30T Valve Adjusting Procedure, Valve Train Parts Specifications, Page 3 of 5 SERVICE DATA Valve AND Lash, SPECIFICATIONS
Inspection and Adjustment (Cont'd) Nissan BD30T Valve Lifters Tappets VALVE LIFTER AND PUSH ROD
CYLINDER Unit:
Standard
Valve lifter outer diameter
24.960. 24.970 (0.9827 0.9831)
Cylinder block valve lifter hole diameter
25.000 • 25.033 (0.9843 0.9855)
Valve Iifter to lifter hole clearance
Push rod bend (T.I.R.)*
0.030.0.073 (0.0012. 0.0029) Lessthan 0.3 (0.012)
HEAD TO VALVE
Unit:
0.20 (0.0079)
SEM724C
0.5 (0.020) Standard
Nissan BD30T Rocker Arms Standard
Unit:
mm (in)
19.979 - 20.00 (0.7866 0.7874)
-
BD30T
0.06 (0.0024)
0.10 (0.00391
0-0.3 (0.0.0121
0.60 (0.0236)
20.02 . 20.04 (0.7882 0.7890)
-
Rocker arm Inner diameter
Clearance between rocker arm and rocker shaft 0.02.0.06 (0.0008. 0.0024)
T027
B030
BD30T
0.014 - 0.056 (0.0006 0.0022)
0.225 - 0.725 (0.0089. 0.0285)
B030 BD30T
0.725 - 1.225 (0.0285 0.0482)
1.25 (0.0492)
Exhaust
Rocker shaft bend (T.I.R.I
B030
T027
Limit
Rocker shaft
T027
Limit
Intake
Rocker shaft and rocker arm
Outer diameter
mm (in)
Limit
*: Total indicator reading
--------
DISTANCE
mm (in)
0.20 (0.0079)
0.15 (0.0059)
EM-3
T027
0.255 - 0.745 (0.0100. 0.0293)
B030
0.755 - 1.245 (0.0297. 0.0490)
BD30T
1.75 (0.0689)
Nissan BD30T Valve Adjusting Procedure, Valve Lash, Valve Train Parts Specifications, Page 4 of 5 ENGINE TUNE-UP
ENGINE TUNE-UP
Nissan BD30T Valve Adjustment
CD,
CID and
BASIC MECHANICAL SYSTEM
adjust valve clearances
RETIGHTENING HEAD BOLTS
3. Set No. 4 cylinder in top dead center on its compression stroke, and adjust valve clearances @, @, (j) and@.
@.
CYLINDER
1. Run engine until coolant temperature indicator points to the middle of gauge, then stop engine. 2. Remove valve rocker cover. 3. Tighten cylinder head bolts according to the order shown in the figure, starting with the center and moving toward the ends.
@,
Valve clearance: @ and I ntake 0.35 mm (0.014 in) Exhaust @,@, @and 0.35 mm (0.014 in)
CD, CID,
- 108 N.m (10 -11 kg-m,
(j)
Fan belt
Used
New
11 - 13 (0.43 - 0.51)
9 - 11 (0.35 - 0.43)
98 N (10 kg, 22 lb)
@
CiJ : Adjusting
CHECKING
ENGINE
COMPRESSION
(1.5 - 2.0 kg-m, 11 - 14 ft.lb)
72 - 80 ft-Ib)
Unit: mm (in)
Applied pushing force
screw lock nuts 15 - 20 N.m
CiJ : 98
Drive belt deflection:
PRESSURE
1. Warm up engine. 2. Remove glow plate or injection nozzle.
Tighten in numerical order. SEM641B
4.
Install valve rocker cover.
SEM370E Nissan BD30T Engine Parts Contact email: EngineParts@HeavyEquipmentRestorationParts.com RETIGHTENING MANIFOLD Phone: 269 673 1638 NUT Website: www.HeavyEquipmentRestorationParts.com
A
3. Fit compression gauge adapter to cylinder head. Make sure bleeder screw of gauge is closed.
Engine front
WARNING:
Q
Do not check the exhaust system until
CiJ : Compression gauge adapter
it has cooled off. Otherwise, you may burn yourself.
CiJ :
For glow plug hole
Intake manifold 13 - 19 N.m (1.3 - 1.9 kg-m,
SMA653C
For injection hole 54.64 N.m
9 - 14 ft-Ib) Exhaust manifold 25 - 29 N.m
4.
(2.5 - 3.0 kg-m, 18 - 22 ft-Ib)
EXHAUST
INTAKE VALVE
CHECKING
Adjustment should engine is hot.
AND
CLEARANCE
(5.5 - 6.5 kg-m, 40 - 47 ft-Ib)
Install valve rocker cover.
DRIVE ADJUSTING
15 - 20 N.m (1.5 - 2.0 kg-m, 11 - 14 ft.lb)
AND
ADJUSTING
BELTS
1. Visually damage.
inspect
for
cracks
or
be made while
The belts should not touch the bottom of the pulley groove.
To adjust, proceed as follows: 1.. Remove valve rocker cover. 2. Set No. 1 cylinder in top dead center on its compression stroke, and
2. Check drive belt deflection by pushing. The belts should deflect by the specified amount.
ET-15
~
Method A:
Nissan BD30T Valve Adjusting Procedure, Valve Lash, Valve Train Parts Specifications, Page 5 of 5
CYLINDER HEAD
Installation (On-vehicle service) (Cont'd) 2. Install cylinder head. Cylinder head identification mark: Identification (on cylinder
number head)
Engine
Float mark
Punch mark
2
-
Nissan BD30T Head Bolt Tightening Sequence, Head Bolt Torque Values 82 3.
T027 8030
Apply oil to the thread portion and seat surface of bolts and tighten cylinder head bolts using Tool.
CAUTION: Tightening procedure 1st: 2nd: Tighten in numerical order.
Tighten bolts to 39 - 44 N.m (4.0 - 4.5 kg-m, 29 - 33 ft.lb) Tighten bolts to 54 - 59 N.m (5.5 - 6.0 kg-m, 40 - 43 ft-Ib)
3rd:
SEM641 B
(1) Mark exhaust side of cylinder head and cylinder head bolts with paint asshown. (2) Turn all bolts 90:!::10degreesclockwise. (3) Check that the paint mark of each bolt is facing the front of the vehicle.
Engine front
@(j)@@@@ Tighten in numerical order.
SEM703C
4. 5.
Apply engine oil and install push rods. Install rocker shaft assembly. Rocker shaft bracket bolt: ~: 20 ~ 25 N'm (2.0 - 2.5 kg-m, 14 - 18 ft-Ib) Adjust intake and exhaust valve clearances temporarily. Refer to section ET.
EM-23