OM3262 2/13 Operator Cab And Controls - Section 32
Page 32-1
DRIVE SYSTEM SOUND ATTENUATION SYSTEM
RETARDING GRID ATTENUATION
PACKAGE
General
The retarding grids have been modified with sound
attenuation devices attached to the inlet & exhaust
ports as shown in Figure 32-1.
The retarding grid assembly will be hot after the
truck has been in operation. Wait until the retard-
ing grid and other hot parts have had sufficient
time to cool before performing any maintenance
work.
Approximate weights
Always use a lifting device that can handle the
load safely.
Refer to Figure 32-1 for the items listed below.
Top inlet attenuator (1) - 100 kg (220 lb)
Top inlet air duct (2) - 18 kg (40 lb)
Rear inlet cover (3) - 8 kg (18 lb)
Inboard inlet cover (4) - 7 kg (15 lb)
Front inlet air duct (5) - 10 kg (22 lb)
Front inlet attenuator (6) - 63 kg (139 lb)
Exhaust attenuator (7) - 61 kg (134 lb)
Retarder grid with sound attenuation - 2 540 kg
(5,600 lb)
1. Top Inlet Attenuators
2. Top Inlet Ducts
3. Rear Inlet Cover
4. Inboard Inlet Cover
5. Front Inlet Air Duct
6. Front Inlet Attenuators
7. Exhaust Attenuators
FIGURE 32-1. RETARDING GRID SILENCER PACKAGE
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