Bosch 5302 Technical Information download pdf (Page 22)

- 22 -

Ø Q (Ø-Q)

3LD 450, 3LD 451/S

3LD 510, 3LD 510/S

85,00 ÷ 85,02 84,925 ÷ 84,945 0,05 ÷ 0,09

4LD 640 95.00 ÷ 95,02 94.88 ÷ 94.90 0.10 ÷ 0.14

4LD 705 100.00 ÷ 100.02 99.83 ÷ 99.85 0.15 ÷ 0.19

4LD 820 102.00 ÷ 102.02 101.85 ÷ 101.89 0.11 ÷ 0.17

Workshop Manual__3 - 4 LD_cod. ED0053025560_4° ed_ rev. 03

Disassembly / Reassembly

Cylinder and piston

Set a bore gauge to zero with a calibrated ring. Check the dia. Ø

at points A and B at three different heights, see pictures 23 and

24.

In case of wear exceeding 0.06 mm to the maximum value

prescribed, grind the cylinder at the subsequent increased value.

The increases suggested are 0.50 and 1.00 mm.

Measure the piston Q dia. (picture 26) at A height from the skirt

base:

A = 17 mm (3LD 450, 3LD 451/S, 4LD 820)

A = 12 mm (3LD 510, 3LD 510/S)

A = 22 mm (4LD 640, 4LD 705)

Remove the stop rings and extract the piston pin, picture 25.

Remove the piston rings and clean the slots.

Replace the piston as well as the segments in case the dia. wear

exceeds 0.05 mm as regards to the minimum value prescribed.

Dimensions (mm)

Note: Even if 3LD 450, 3LD 450/S and 3LD510, 3LD510/S

pistons have the same bore, they differ in other

dimensions, thus they are not interchangeable.

ENGINES

Distance among segment ends (mm)

Insert the piston ring in the lower part of the cylinder, then mea-

sure the distance among the points.

3LD 450, 3LD 451/S, 3LD510, 3LD 510/S

piston ring (chromium plated) A = 0.30 ÷ 0.50

piston ring (torsional) A = 0.30 ÷ 0.50

piston ring (scraper ring) A = 0.25 ÷ 0.50

4LD 640, 4LD 705, 4LD 820

piston ring (chromium plated) A = 0.40 ÷ 0.65

piston ring (torsional) A = 0.40 ÷ 0.65

piston ring (oil scraper ring) A = 0.30 ÷ 0.60

Piston ring - Clearances among slots (mm)

3LD 450, 3LD 451/S, 3LD 510, 3LD 510S, picture28

A = 0.08 ÷ 0.09

B = 0.06 ÷ 0.07

C = 0.05 ÷ 0.06

4LD 640, 4LD 705, 4LD 820, picture 29

A = 0.12 ÷ 0.14

B = 0.07 ÷ 0.09

C = 0.07 ÷ 0.09

D = 0.06 ÷ 0.08

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 47 48

Comments to this Manuals

No comments

Bosch 5302 Technical Information Page 22

Comments to this Manuals

Related products and manuals for Dishwashers Bosch 5302