- ページ 10

産業機器 Dover TWG 250PRのPDF サービス＆リペアマニュアルをオンラインで閲覧またはダウンロードできます。Dover TWG 250PR 19 ページ。

1. Evenly remove the six bolts (Item 26) attaching the brake housing (Item 27) to the brake

adapter (Item 19). Spring pressure will raise the brake housing as the bolts are loosened.

Remove the brake housing from the brake adapter.

2. Remove the piston (Item 28) from the brake housing (Item 27) by applying shop air to the

"BR" port.

3. Remove the brake shaft (Item 30), friction disc's (Item 31), stator plates (Item 32) and

bearings (Item 29) from brake housing (Item 27).

4. Using a bearing puller remove the bearings (Item 29) from the brake shaft (Item 30).

5. Remove the friction disc's (Item 31) and stator plates (Item 32) from brake shaft (Item 30)

and check them for excessive wear, then replace if necessary. Friction discs should measure at

least 0.075 inches thick and stator plates should at least than 0.045 inches thick.

6. Remove the spacer (Item 40).

7. If equipped with a "Service Brake", remove the service brake piston by applying shop air to the

"BA" port.

8. Remove and inspect all brake springs (Item 25) for damage. Replace if necessary.

9. Remove the O-rings (Item 44) out of brake adapter (Item 19).

10. Remove the O-rings and backup rings (Items 45, 46, 47, 48) from the piston brake (Item

28).

11. Install a new bearing (Item 29) into the brake adapter (Item 19).

12. Install the brake springs (Item 25) into the spring pockets in brake adapter (Item 19).

13. Tap or press the brake shaft (Item 30) into the bearing in the brake adapter (Item 19).

Note: The 6 tooth spline should be oriented to engage with the hydraulic motor.

14. Install the O-ring (Item 44) onto the brake adapter (Item 19).

15. Install the O-ring and backup rings (Items 45, 46, 47 and 48) onto the O.D. and I.D. of the

piston brake. Note, the rectangular backup rings should be located on the outsides of the O-

rings as shown in the cross sectional drawing on the Pg. 11 of this manual. Lubricate the O-

ring and backup rings and place the piston onto the springs centering the piston in the brake

adapter.

16. Install the friction discs (Item 31) and stator plates (Item 32) into the piston over the brake

shaft (Item 30). Note, you will start with a friction disc and end with a friction disc.

17. Place the spacer (Item 40) into the piston on top of the friction/stator pack.

SERVICING THE BRAKE