Mitsubishi 4DQ5 Service Manual download pdf (Page 102)

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(YJ

I

Group

e

II

...

'"

~

"U

;:I

1.1..

--

Po

e

:s

"-

.=:

:3

u

II

:5'

u

:s

""

0

.=:

...

...

>

0

(.:l

--

Item

Inside diameter

of

tappet holes in pump

housing

Axial play

of

camshaft

bearing

Fit

of

tappet pin

in

tappet (hole)

Fit

of

tappet floating

bushing

on

tappet pin

Fit

of

tappet roller

on

floa ling bushing

Pre-stroke

1--------

Intervals

of

beginning

of

injection

Tappet clearance

Injection quantity

adjustment

Fit

of

flyweight bushing

on weight supporting shaft

Fit

of

flyweight bushing

on

governor shaft

Backlash

of

speed

step-up gears

--

Nominal

Assembly

standard

odimension

[Standard

clearance]

24 (0.945)

0.03

~

0.05 I

1(0.0012

~

0.0020)

0.013

~0.050

1(0.00051

~0.00197)1

7 (0.276)

0.033

~0.078

1 (0.00 130

~

0.00307) I

11

(0.433)

0.050

~0.097

1(0.00197

~0.00382)1

1.95 (0.0768) ± 0.05 (± 0.0020)

90°

±30'

1 0.2

~0.3

I

(0.008

~0.012)

Test conditions

Nozzle tip:

Injection pipe:

Injection pressure:

Delivery pressure:

Test oil:

Pump speed Rack position

rpm

mm

2000

8.5 (0.335)

1000

1000 8.0 (0.315)

200

6.0 (0.236)

7 (0.276)

0.019

~0.047

1(0.00075

~O.00185)1

11

(0.433)

0.016

~0.052

1(0.00063

~0.00205)1

0.06

~0.12

I

1(0.0024

~0.0047)

-

Unit:

mm

(in.)

Repair limit Service limit

Remedy

Remarks

[Clearance]

[Clearance]

-0.15

(-0.0059)

[

0.1

]

Adjust

by means

of

(0.004)

shim.

~Olal

play: ]

Replace tappet com-

0.3 (0.012),

plete.

max

ND-DN40SDN32

6 x 1.6 x

600 mm (1/4 x 1/16 x 23-5/8 in)

120 kg/cm

2

(1706 psi)

2.0 kg/cm

2

(28.44 psi)

ASTM

Diesel fuel No.

2D

Mount injection

pump

on

pump lester and allow pump

I njection quanti

tv

Variance

to inject into the air.

mm

3

(cu in.)/rev./cyl.

mm

3

(cu in.)/rev./cyl.

36

~39

3 (0.00018),

max

(0.0022

~0.0024)

I

32~35

2 (0.00012),

max

(0.0020

~

0.0021)

10

~16

I

(0.0006

~

0.0010)

I

0.025 Replace flyweight

1(0.00098) I

assembly.

1 0.10 I

(0.0039)

Replace bushing .

1 0.20 I

(0.0079)

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