SHIMMING OF ATTACHMENTS

The purpose of shimming attachments is to reduce and spread lateral play in the linkages and to keep the various components correctly aligned. Play is defined as the extent of possible lateral movement between one component and another at their linkage point. Shimming is carried out using steel shimming washers. IMPORTANT: The minimum play for all linkage points should never be less than 0.5mm.

Shimming washers

Part No. (1) Part No. (2) Part No. (3) 1 mm.............................................L3145352.............M3145353..........N3145354 2 mm..............................................L745347..............H3415326.............D745341 4 mm...............................................U45443......................-....................L745440

Boom top/Dipper bottom Dipper top/Bucket

A

1 2

PDG0142 Measure the total play. If it is equal to or greater than 2 mm, insert washers (1) so as to obtain a minimum play of 0.5 mm. NOTE: Shimming must be symmetrical between the boom top and the dipper bottom. IMPORTANT: Do not insert washers on the inner side of the dipper bottom (A).

PDG0143 Measure the total play. If it is equal to or greater than 2 mm, insert washers (2) so as to obtain a minimum play of 0.5 mm. To remove the pin, see “Replacing a backhoe bucket” . NOTE: Shimming should be symmetrical between the dipper top and the bucket lugs.

Dipper cylinder and bucket cylinder top

Measure play at (J). If it is equal to or greater than 2 mm, insert washers (1) until a minimum play of 0.5 mm is obtained.

1 3 1 3

PDG0147 Washers (3) for the dipper cylinder and washers (1) for the bucket cylinder. To remove the pin, see “Replacing a backhoe bucket” .

Dipper cylinder and bucket cylinder bottom

Measure the total play. If it is equal to or greater than 2 mm, insert washers (1) until a minimum play of 0.5 mm is obtained. 1 3 1 3

PDG0147 Washers (3) for the dipper cylinder and washers (1) for the bucket cylinder. To remove the pin, see “Replacing a backhoe bucket” . NOTE: Shimming should be symmetrical between the cylinder bottom and the lugs.

Yoke/connecting rod and yoke/dipper pins

PDF0054 Using the nut, bring the yokes into contact with the connecting rod and with the dipper and then loosen until it is possible to fit the retaining pin in the nut. Play at (J1) should be between: Minimum play: 0.5 mm. Maximum play: 0.7 mm.