Required Tools | |||
Tool | Part Number | Part Description | Qty |
A | 341-1462 | Grid Rollover Tool | 1 |
B | 439-3940 | Link Bracket(1) | 2 |
C | 395-1094 | Lifting Eye Assembly | 2 |
D | - | 1/2 - 13 x 18" Threaded Rod | 3 |
(1) | Use Grade 8 Bolts for installing the link brackets. |
Start By:
- Remove the grid assembly. Refer to Disassembly and Assembly, "Electric Retarder - Remove".
- Remove nine bolts (1) and the washers. Do not remove three bolts (1) that are indicated with an (A). Use two people to remove screen assembly (2). The weight of screen assembly (2) is approximately
23 kg (50 lb) .Show/hide tableIllustration 2 g06216157 Show/hide tableIllustration 3 g06225334 Tooling (A) - Tooling (A) will need to be modified before being attached to the retarder grid assembly. Refer to Illustration 2 and 3 for instruction to modify Tooling (A).
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Illustration 4 g06224194 Show/hide tableIllustration 5 g06224202 Show/hide tableIllustration 6 g06224546 - Use the suitable fork truck to position Tooling (A) against the fan end retarder grid assembly (3). The weight of retarder grid assembly (3) is approximately
1724 kg (3800 lb) . - Install nine bolts (1) and the washers.
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Illustration 7 g06224216 Outlet End - Install Tooling (B).
- Use the following steps to rotate and lower grid assembly (4).
- There are two possible methods for lowering the grid assembly to the ground. Use a suitable lifting device to assist Tooling (A) to rotate grid assembly (3) by 90 degrees and lower to the ground.
- Method 1 - without a fork lift
- Attach a suitable lifting device to Tooling (B). Attach a suitable lifting device to the link brackets on Tooling (A).
- Rotate grid assembly (3) onto the ground by raising one end and lowering the other.
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Illustration 10 g06224231 Show/hide tableIllustration 11 g06224249 - Method 2 - with a fork lift
- Attach a suitable lifting device to Tooling (B).
- Rotate grid assembly (3) by alternating between raising the lifting device and lowering the forks of the fork lift.
Show/hide tableIllustration 8 g06224221 Show/hide tableIllustration 9 g06224224
Show/hide tableIllustration 12 g06223981 Show/hide tableIllustration 13 g06223985 - There are two possible methods for lowering the grid assembly to the ground. Use a suitable lifting device to assist Tooling (A) to rotate grid assembly (3) by 90 degrees and lower to the ground.
- Mark the locations of bolts (4) that are indicated with a (AA) and a (BB) for installation purposes. Remove bolts (4) and the washers. Remove bolts (5) and the washers. Use two people to remove outlet screen (6). The weight of outlet screen (6) is approximately
23 kg (50 lb) Note: Bolts (4) are two different sizes. Be sure to install these bolts in the same locations for assembly.
Show/hide tableIllustration 14 g06220096 - Remove bolts (7), the washers, and cover (8).
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Illustration 15 g06218479 Show/hide tableIllustration 16 g06225721 - Remove nuts (9), nuts (13), and the washers. Disconnect cable glands (10). Loosen elbow (12). Remove cable assemblies (11) and cable assemblies (14) with the conduit from the junction box.
- Cut the terminal leads from cable assemblies (14) to allow the cables to be pulled through the conduit.
Note: Cut the ring terminals off parallel to the cable to avoid loosing cable length.
Show/hide tableIllustration 17 g06218481 - Remove bolts (15), the washers, and junction box assembly (16).
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Illustration 18 g06220098 - Remove bolts (17), the washers, and cover (18).
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Illustration 19 g06220110 - Remove bolts (19), the washers, bracket assembly (20), and bracket assembly (21).
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Illustration 20 g06220118 - Disconnect clips (22).
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Illustration 21 g06218745 - Remove bolts (23), the washers, and cover (24). Loosen cleat assembly (25).
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Illustration 22 g06218837 - Remove bolts (26), washers (27), nuts (28), and bus bars (29). Pull cable assembly (30) from cleat assembly (25).
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Illustration 23 g06218768 - Remove bolts (31) and the washers. Loosen cleat assembly (33) and position cover (32) out of the way.
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Illustration 24 g06218800 - Remove bolts (34), washers (35), nuts (36), and bus bars (37). Position cable assembly (38) out of the way.
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Illustration 25 g06218874 Show/hide tableIllustration 26 g06218878 Show/hide tableIllustration 27 g06225704 - Attach suitable lifting device onto support (39). The weight of support (39) is approximately
50 kg (110 lb) . - Remove bolts (40) and the washers.
- Remove bolts (5) and the washers.
- Remove support (39).
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Illustration 28 g06219970 - Remove bolts (41), the washers, and bracket assemblies (42).
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Illustration 29 g06218881 - Remove bolts (43) and plates (44).
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Illustration 30 g06220164 Top View - Mark the location of element (45) on Tooling (A). This element is known as a Tapped Element. The element must be marked for installation purposes. The Tapped Element must be installed in this location for installation.
Note: Mark the location and alignment of element (46), element (47), and element (48) for installation purposes.
Note: Tapped Element (45) can be removed in the same manner as the three remaining elements.
Show/hide tableIllustration 31 g06220020 - Attach Tooling (B) and a suitable lifting device to element (46). The weight of element (46) is approximately
175 kg (385 lb) . - Remove bolts (49), bolts (50), and the washers.
- Remove element (46).
- Repeat Step 26 through Step 28 for each of the remaining elements.
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Illustration 32 g06220175 - Attach a suitable lifting device onto Tooling (B). Remove bolts (1). Remove support (51). The weight of support (51) is approximately
113 kg (250 lb) .Show/hide tableIllustration 33 g06222787 - If necessary. use Tooling (B) and a suitable lifting device to remove fan assembly (52) from Tooling (A). The weight of fan assembly (52) is approximately
704 kg (1550 lb) .Note: Mark the alignment of fan assembly (52) and the electrical channel on Tooling (A) for installation purposes.
Show/hide tableIllustration 34 g06222529 - Remove bolts (53) and retaining plate (54).
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Illustration 35 g06222559 Show/hide tableIllustration 36 g06222791 - Install Tooling (D).
- Attach a suitable lifting device to fan assembly (55). The weight of fan assembly (55) is approximately
174 kg (384 lb) . - Remove fan assembly (55).
Note: Make certain that the fan is kept level and square to the rotor. The fan must not make contact with the sides of the rotor coils.
- Remove Tooling (D).
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Illustration 37 g06224267 - Remove nuts (56), plate (57), and block (58).
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Illustration 38 g06172317 Note: Install caps or tape over the studs to protect the cable leads.
- Remove lead fastener (59).
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Illustration 39 g06224273 - Remove conduit (60).
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Illustration 40 g06222845 - Remove stator retaining bolts (61).
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Illustration 41 g06224297 Show/hide tableIllustration 42 g06225743 Show/hide tableIllustration 43 g06224670 - Attach Tooling (C) and a suitable lifting device to stator assembly (62).
- Remove stator assembly (62) from fan housing (63).
Note: Carefully pull leads (64) through the channel of fan housing (63) while lifting stator assembly (62).
Show/hide tableIllustration 44 g06224678 - Remove bolts (65).
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Illustration 45 g06224676 Show/hide tableIllustration 46 g06226007 - Use Tooling (C) and a suitable lifting device to raise stator assembly (62). Strike shaft assembly (66) with a soft faced mallet to remove shaft assembly (66) from stator (67).
Note: If necessary, use a suitable pry bar to assist the removal of shaft assembly (66).
Show/hide tableIllustration 47 g06223087 Show/hide tableIllustration 48 g06224695 - Remove snap ring (68).
- Use a suitable press to remove bearing (69) from shaft assembly (66).
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Illustration 49 g06223384 - Reposition the shaft and remove roll pin (70).
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Illustration 50 g06172331 - Remove lock nut (71) and lock washer (72).
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Illustration 51 g06224696 - Use a suitable press to remove bearing (73) and bearing cover (74) from shaft assembly (66).
Illustration 1 | g06224152 |