Mitsubishi 4DQ5 Service Manual download pdf (Page 101)

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p.

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p.

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~

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[.L.

p.

E

"

p.

c

.g

u

"

'c:'

.-

-.;

"

[.L.

Delivery capacity

Air-tightness

Pumping

performance

Number

of

strokes

for

pumping (priming

pump)

Plunger oil-tightness

Delivery valve seating

tightness

Backlash

between

pinion

and rack

Rack sliding resistance

Fit

of

tappets

in

pump

housing

f--.

Outside

diameter

of

tappet

rollers

Free

length

Plunger

springs

As-installed

length

Free

length

of

delivery

valve spring

Cam height (major

diam)

900 cc (55 cu

in.)/min,

600 cc (37

Cll

in.)/min,

min

min

Not

greater

than

50 ee (3.1 eu

in.)/min

(with

bubbles

not

larger

than

2

rom

(0.08

in.)

in

size.)

40

seconds, max

50 seconds

25, max

30

150~200

150 kg/cm

2

kg/cm

2

(2133

~

(2133 psi),

2844 psi),min

max

-

(0.15 (0.0059) I

150 g (5.3 ()z), max with

pump

at

stand-still; 50 g (1.8 oz), max with

pump

running

at

1000

rpm

( 0.02

~0.062

I

(0.00079

~

0.00244)

j--------

15 (0.591)

o 0

-0.027

<-0.00106)

-I---'

49.4

0.945)

+1

to.039)

o 0

44 (1.732)

32

(1.260)

± 0.5 (± 0.020)

1------

32 (1.260)

o

~0.1

(0

~0.004)

Unit:

mm

(in.)

Check displacement

with

injection

pump

operated

at

1000 rpm

with

a discharge

pressure

of

1.5 kg/ cm

2

(21

psi).

Close

pump

discharge

port

with

a plug. Apply an air

pressure

of

2 kg/cm

2

(28 psi)

to

the

pump,

and

keep

the

pump

immersed in diesel fuel

longer

than

1

minute.

Operate

injection

pump

at

150

rpm

to

check

the

length

of

time required for

the

feed

pump

to start discharging.

Operate

priming

pump

handle

at a speed

of

60

strokes/

minute.

Check

the

number

of

strokes

required for making

the

pump

start discharging

at a head

of

1

meter

(39-3/8 in.).

Pump

rpm: 200

10

kg/cm

2

(142 psi) pressure

See Remarks.

drop

should not exceed 5

seconds.

(0.25

I

(0.0098)

-

( 0.25 I

(0.0098)

-0.075

( -·0.00295)

--------

-0.5

(-0.020)

--

,

-I

(-0.039)

-0.2

Replace camshaft.

Check cam surface for

(

-0.0078)

condition.

1 2 ... 96 97 98 99 100 101 102 103 104 105 106 ... 119 120

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