Toyota 2H Repair Manual page 248

L U B RICATION SY S T E M - O i l P u m p
I f
I N S P E CT I O N O F Oil PU M P
1 . I N SPECT R E L I E F VALVE
C o a t t h e valve w i t h engine oil a n d check t h a t i t falls
s m o o t h ly i n t o t h e valve h o l e by its own weight.
opera t i o n is nOI as specified, replace t h e relief valve.
neceSSary, replace the o i l p u m p body.
2 . I N S PECT D R I V E A N D D R I V E N ROTORS
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A . Inspect Rotor Body C learance
I I
Using a feeler gauge, measure the clearance between the
driver rotor a n d body.
S t andard body clearanc e :
Maximum body clearance :
t h e clearance is greater t M a n ma)(imum. replace rotors I f
neces s a ry, replace t h e o i l p u m p b o d y .
B . I n s p e c t R o t o r S id e C learance
Using a feeler gauge a n d precision straight edge, measure
the clearance belween t h e rotor and precision s t r a i g h t
e d g e .
Sta ndard s i d e clearance:
M a x i mum side c learance :
I f the clea rance i s g rea ler than ma)(imum, rep lace the
rotors I f necessary, replace t h e o i l p u m p body.
I ns pe c t Rotor T ip C learance
C.
I f
Using a feeler g a u ge, measure Ihe clearance between the
drive and driven rolors .
Sta ndard tip clearance:
Maximum tip clearance :
Ihe clearance i s g reater than ma)(imum, replace t h e
rotors.
3 . I N SPECT DRIVE S P L I N E
U s i n g a dial indicator, measure t h e backlash w h i l e t u m i n g
If
the d riven r o l o r clockwise a n d c o u n t e rclockw ise i n several
places.
S tandard backla s h :
M a x i m u m b a c k l a s h :
t he backlash
rotors and spline
0 . 1 44 - 0 . 2 1 9 m m
10.0067 - 0.0086 in.!
0.40 m m 10. 0 1 5 7 in.1
0.035 - 0.090 m m
{0.00 1 4 - 0.0036 i n . !
0 . 1 5 m m 10.0069 in.1
0 . 1 1 0 - 0.240 mm
(0.0043 - 0.0094 inJ
0.30 m m 10.01 1 8 in.!
0 . 5 4 1 - 0.790 mm
{0.02 1 3 - 0 . 03 1 1 in.!
1 . 00 mm (0.0394 in.!
I S
g reater than m a )( i m u m , replace the
LU-9
If