Tohatsu MFS 30 — инструкция по сборке поршня и шатунов для двигателя [169/319]

Превью страниц Страница 169 / 319

5-53

25/30 2006

37)

Assembling Piston and Connecting Rod

1. Install connecting 2, piston pin 3, and piston pin clip 4 to

piston 1.

CAUTION

Be careful not to scratch piston surface

and damage rings.

＃1

＃2

＃4

＃5

＃3

2. Put expander 5 ( #4 ) into oil ring groove, and check that

ring ends meets correctly as shown.

3. While holding expander 5 ( #4 ) gap with thumb, put upper

side rail ( #3 ) into the groove so that the gap is away from

gap of expander 5 ( #4 ) to the left by 90 degrees.

4. In similar way, put lower side rail ( #5 ) into the groove so

that the gap is away from gap of expander 5 ( #4 ) to the

right by 90 degrees.

5. Install second ring (#2 taper) and top ring ( #1 ) to piston.

Install the rings so that their side with manufacturer's

identification d (T) faces upward.

6. Install piston ring so that their gaps are away from each

other.

• Point "3RO-UP" mark of connecting rod a and

"UP" mark b of piston at the same direction.

• Be sure to use new piston pin clip, and place

clip gap away from piston pin groove c as

shown.

• Be sure that individual connecting rod cap is

installed to their original connecting rod.

• Install piston rings so that their gaps are away

also from thrust direction of piston and

direction piston pin.

• After installing piston rings, check that they

move smoothly.

MFS25_30_ch05.qxd 06.3.9 4:49 PM ページ 53