Nissan BD30T Valve Adjusting Procedure, Valve Lash, Valve Train Parts Specifications,

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